From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848817; cv=none; d=zohomail.com; s=zohoarc; b=AOtrhzZRJ1aYlsCShPDJjg7GsUNNqFNbnT1t9neQMRqd+6eimgPPwI4iNt3/kmkaVtmmyfFn95lF+hsSbE2PQHmOFIAG0ribTPRbuh2MHoMW0oLJL+TsGBrL+vFYZOavp5hmK+lyRtkiO7Lasa9Us43vj95mI5NG3VjZ2Q3Ontc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848817; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=2QJAlf70N0EQAeu+sY5mYIW7U8Kb/aPsvIxdva1LARw=; b=YTzIwCyzlRRWLVpxUFWYW49It4CZ7W0cFWdMkNlmFNgw1tVCu79P0vDS1P8PM3BGsMDUY0mrqg1aL0Awe/SHAHXkqtWQwwuQgaqEQQ+QMxDHV8CCB+lrnwBmOL+bYgLUa1OhiY/Jr06Z7sQgKxi9DXLK5ENJ9c5T/V1EU/WN+6g= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848817153411.43336029578575; Mon, 19 Jan 2026 10:53:37 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuMz-0006Et-Ac; Mon, 19 Jan 2026 13:52:57 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMt-00067V-5G for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:51 -0500 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMo-0005qH-Jc for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:49 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id D37AB8072F; Mon, 19 Jan 2026 21:52:42 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-PF0hALdb; Mon, 19 Jan 2026 21:52:42 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848762; bh=2QJAlf70N0EQAeu+sY5mYIW7U8Kb/aPsvIxdva1LARw=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=O7sf8SOvWtvkp8oUrvV1XXuSRzYbfBvsPtOI8m2nvZMvvAyRdZG6kipipKnRa9gg1 FiPeV+/v68lP9YyVe7Cc77NuXjzwPukBhLdmnaSVEmKBh8t00AE8T6l5S57Gf5dJJA pNJETiaY7aFS30QeKvU1CkJnwrRmOXIsK9snoypc= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz , "Gonglei (Arei)" , zhenwei pi , Jason Wang Subject: [PATCH v4 01/23] vhost-user: rework enabling vrings Date: Mon, 19 Jan 2026 21:52:05 +0300 Message-ID: <20260119185228.203296-2-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848821464158500 Content-Type: text/plain; charset="utf-8" We call the handler almost the same way in three places: - cryptodev-vhost.c - vhost_net.c - vhost.c The only difference, is that in vhost.c we don't try to call the handler for old vhost-user (when VHOST_USER_F_PROTOCOL_FEATURES is not supported). cryptodev-vhost and vhost_net code will just fail in this case. Probably they were developed only for newer vhost-user. Anyway, it doesn't seem correct to rely on this error path, if these devices want to check, that they don't communicate to old vhost-user protocol, they should do that earlier. Let's create the common helper, to call .vhost_set_vring_enable and use in all three places. For vhost-user let's just always skip enable/disable if it's unsupported. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- backends/cryptodev-vhost.c | 8 +------- hw/net/vhost_net.c | 7 +------ hw/virtio/vhost-user.c | 7 ++++++- hw/virtio/vhost.c | 21 --------------------- include/hw/virtio/vhost.h | 9 +++++++++ 5 files changed, 17 insertions(+), 35 deletions(-) diff --git a/backends/cryptodev-vhost.c b/backends/cryptodev-vhost.c index 943680a23a..abdfce33af 100644 --- a/backends/cryptodev-vhost.c +++ b/backends/cryptodev-vhost.c @@ -152,7 +152,6 @@ vhost_set_vring_enable(CryptoDevBackendClient *cc, { CryptoDevBackendVhost *crypto =3D cryptodev_get_vhost(cc, b, queue); - const VhostOps *vhost_ops; =20 cc->vring_enable =3D enable; =20 @@ -160,12 +159,7 @@ vhost_set_vring_enable(CryptoDevBackendClient *cc, return 0; } =20 - vhost_ops =3D crypto->dev.vhost_ops; - if (vhost_ops->vhost_set_vring_enable) { - return vhost_ops->vhost_set_vring_enable(&crypto->dev, enable); - } - - return 0; + return vhost_dev_set_vring_enable(&crypto->dev, enable); } =20 int cryptodev_vhost_start(VirtIODevice *dev, int total_queues) diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index a8ee18a912..25e9f1fd24 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -587,7 +587,6 @@ VHostNetState *get_vhost_net(NetClientState *nc) int vhost_net_set_vring_enable(NetClientState *nc, int enable) { VHostNetState *net =3D get_vhost_net(nc); - const VhostOps *vhost_ops =3D net->dev.vhost_ops; =20 /* * vhost-vdpa network devices need to enable dataplane virtqueues after @@ -601,11 +600,7 @@ int vhost_net_set_vring_enable(NetClientState *nc, int= enable) =20 nc->vring_enable =3D enable; =20 - if (vhost_ops && vhost_ops->vhost_set_vring_enable) { - return vhost_ops->vhost_set_vring_enable(&net->dev, enable); - } - - return 0; + return vhost_dev_set_vring_enable(&net->dev, enable); } =20 int vhost_net_set_mtu(struct vhost_net *net, uint16_t mtu) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 63fa9a1b4b..7615ae2a9b 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1235,7 +1235,12 @@ static int vhost_user_set_vring_enable(struct vhost_= dev *dev, int enable) int i; =20 if (!virtio_has_feature(dev->features, VHOST_USER_F_PROTOCOL_FEATURES)= ) { - return -EINVAL; + /* + * For vhost-user devices, if VHOST_USER_F_PROTOCOL_FEATURES has n= ot + * been negotiated, the rings start directly in the enabled state, + * and can't be disabled. + */ + return 0; } =20 for (i =3D 0; i < dev->nvqs; ++i) { diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 31e9704cdc..29f2c75f1e 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -2022,27 +2022,6 @@ int vhost_dev_get_inflight(struct vhost_dev *dev, ui= nt16_t queue_size, return 0; } =20 -static int vhost_dev_set_vring_enable(struct vhost_dev *hdev, int enable) -{ - if (!hdev->vhost_ops->vhost_set_vring_enable) { - return 0; - } - - /* - * For vhost-user devices, if VHOST_USER_F_PROTOCOL_FEATURES has not - * been negotiated, the rings start directly in the enabled state, and - * .vhost_set_vring_enable callback will fail since - * VHOST_USER_SET_VRING_ENABLE is not supported. - */ - if (hdev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_USER && - !virtio_has_feature(hdev->backend_features, - VHOST_USER_F_PROTOCOL_FEATURES)) { - return 0; - } - - return hdev->vhost_ops->vhost_set_vring_enable(hdev, enable); -} - /* * Host notifiers must be enabled at this point. * diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 08bbb4dfe9..1ee639dd7e 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -215,6 +215,15 @@ static inline bool vhost_dev_is_started(struct vhost_d= ev *hdev) return hdev->started; } =20 +static inline int vhost_dev_set_vring_enable(struct vhost_dev *hdev, int e= nable) +{ + if (!hdev->vhost_ops->vhost_set_vring_enable) { + return 0; + } + + return hdev->vhost_ops->vhost_set_vring_enable(hdev, enable); +} + /** * vhost_dev_start() - start the vhost device * @hdev: common vhost_dev structure --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848830; cv=none; d=zohomail.com; s=zohoarc; b=jNOmKmOiraY/VIlLFdd6fUEBxxTaCXHigMykZYXB7sJKZvvnn0HReM5rFu821NxOg0D3DFRzY18OFIhzwSbBFOJZwuQSu60lcrgeNDSsp+xTui4Dn+5XshX9nKb8VPYaWFfiFrrhKOnhXnhy9SGl38QP1jhiFeRR07xpsnxn7iw= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848830; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Upjf9skzI4kGaeXDw0oyhclF1hhVD/ceyfNsiKMrg9M=; b=HIKNGp99ccmwM6Xb5u4Tqe035zQLIzpYrGhwe2hpAFdbT1eSQcx8uELAY2Y76s8SbjGW1CW7IjEHhlOKKGGSb03fZV6Zrid6whVMUMUcQ6tg7w0Y5n3/6duZRoEuwyMr47wuCg5CqVbT5pZYWmjNu1H8TA70x73kkyGmQLtLwyg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848830982873.9654043815224; Mon, 19 Jan 2026 10:53:50 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuMz-0006FV-CN; Mon, 19 Jan 2026 13:52:57 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMt-00067W-5j; Mon, 19 Jan 2026 13:52:51 -0500 Received: from forwardcorp1a.mail.yandex.net ([2a02:6b8:c0e:500:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMp-0005qM-LL; Mon, 19 Jan 2026 13:52:50 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id 83AE4C04D9; Mon, 19 Jan 2026 21:52:44 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-ZaHKTs4d; Mon, 19 Jan 2026 21:52:43 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848763; bh=Upjf9skzI4kGaeXDw0oyhclF1hhVD/ceyfNsiKMrg9M=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=WPC7baMisFzx9+it74o7OPFtPNMxugkZFEmta0uFKrK/d0NC3rnXcw2IeyvAZJChu QwdfyQcfR0OU9G0lDJ/CQtGrdL73/LjvoV9achvD2GPY9QWhp37o0paZjEVTl0UvOq vPwmJS3kgrTCQcOW8gA6+QAoUyMhPyq4rUTcocp8= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, devel@lists.libvirt.org, Markus Armbruster , Raphael Norwitz , Kevin Wolf , Hanna Reitz , Jason Wang , Paolo Bonzini , Fam Zheng , Eric Blake , qemu-block@nongnu.org (open list:Block layer core) Subject: [PATCH v4 02/23] vhost: drop backend_features field Date: Mon, 19 Jan 2026 21:52:06 +0300 Message-ID: <20260119185228.203296-3-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c0e:500:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848834234154100 Content-Type: text/plain; charset="utf-8" This field is mostly unused and sometimes confusing. We even have a TODO-like comment to drop it, the comment is removed in this commit. The field is used to held VHOST_USER_F_PROTOCOL_FEATURES for vhost-user and/or VHOST_NET_F_VIRTIO_NET_HDR for vhost-net (which may be vhost-user-net). But we can simply recalculate these two flags in place from hdev->features, and from net-client for VHOST_NET_F_VIRTIO_NET_HDR. Note: removing field from x-query-virtio-status result is incompatible change. We can do it because the command is unstable. Cc: devel@lists.libvirt.org Signed-off-by: Vladimir Sementsov-Ogievskiy Acked-by: Markus Armbruster Reviewed-by: Daniil Tatianin Acked-by: Raphael Norwitz --- hw/block/vhost-user-blk.c | 1 - hw/net/vhost_net.c | 26 ++++++++++++++------------ hw/scsi/vhost-scsi.c | 1 - hw/scsi/vhost-user-scsi.c | 1 - hw/virtio/vdpa-dev.c | 1 - hw/virtio/vhost-user.c | 17 ++++++++--------- hw/virtio/virtio-hmp-cmds.c | 2 -- hw/virtio/virtio-qmp.c | 4 ---- include/hw/virtio/vhost.h | 7 ------- qapi/virtio.json | 3 --- 10 files changed, 22 insertions(+), 41 deletions(-) diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index 4d81d2dc34..c8f7156ca6 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -348,7 +348,6 @@ static int vhost_user_blk_connect(DeviceState *dev, Err= or **errp) s->dev.nvqs =3D s->num_queues; s->dev.vqs =3D s->vhost_vqs; s->dev.vq_index =3D 0; - s->dev.backend_features =3D 0; =20 vhost_dev_set_config_notifier(&s->dev, &blk_ops); =20 diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 25e9f1fd24..fda90e231e 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -52,8 +52,14 @@ int vhost_net_set_config(struct vhost_net *net, const ui= nt8_t *data, =20 void vhost_net_ack_features_ex(struct vhost_net *net, const uint64_t *feat= ures) { - virtio_features_copy(net->dev.acked_features_ex, - net->dev.backend_features_ex); + virtio_features_clear(net->dev.acked_features_ex); + if (net->backend =3D=3D -1) { + net->dev.acked_features =3D + net->dev.features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES); + } else if (!qemu_has_vnet_hdr(net->nc)) { + net->dev.acked_features =3D 1ULL << VHOST_NET_F_VIRTIO_NET_HDR; + } + vhost_ack_features_ex(&net->dev, net->feature_bits, features); } =20 @@ -258,12 +264,9 @@ struct vhost_net *vhost_net_init(VhostNetOptions *opti= ons) if (r < 0) { goto fail; } - net->dev.backend_features =3D qemu_has_vnet_hdr(options->net_backe= nd) - ? 0 : (1ULL << VHOST_NET_F_VIRTIO_NET_HDR); net->backend =3D r; net->dev.protocol_features =3D 0; } else { - virtio_features_clear(net->dev.backend_features_ex); net->dev.protocol_features =3D 0; net->backend =3D -1; =20 @@ -284,13 +287,12 @@ struct vhost_net *vhost_net_init(VhostNetOptions *opt= ions) net->dev.features &=3D ~(1ULL << VIRTIO_NET_F_MRG_RXBUF); } =20 - if (virtio_features_andnot(missing_features, - net->dev.backend_features_ex, - net->dev.features_ex)) { - fprintf(stderr, "vhost lacks feature mask 0x" VIRTIO_FEATURES_= FMT - " for backend\n", VIRTIO_FEATURES_PR(missing_features)); - goto fail; - } + if (!qemu_has_vnet_hdr(options->net_backend) && + (~net->dev.features & (1ULL << VHOST_NET_F_VIRTIO_NET_HDR))) { + fprintf(stderr, "vhost lacks feature mask 0x%llx for backend\n= ", + ~net->dev.features & (1ULL << VHOST_NET_F_VIRTIO_NET_H= DR)); + goto fail; + } } =20 /* Set sane init value. Override when guest acks. */ diff --git a/hw/scsi/vhost-scsi.c b/hw/scsi/vhost-scsi.c index 699863cc10..859888fdba 100644 --- a/hw/scsi/vhost-scsi.c +++ b/hw/scsi/vhost-scsi.c @@ -275,7 +275,6 @@ static void vhost_scsi_realize(DeviceState *dev, Error = **errp) vqs =3D g_new0(struct vhost_virtqueue, vsc->dev.nvqs); vsc->dev.vqs =3D vqs; vsc->dev.vq_index =3D 0; - vsc->dev.backend_features =3D 0; =20 ret =3D vhost_dev_init(&vsc->dev, (void *)(uintptr_t)vhostfd, VHOST_BACKEND_TYPE_KERNEL, 0, errp); diff --git a/hw/scsi/vhost-user-scsi.c b/hw/scsi/vhost-user-scsi.c index 3612897d4b..5070178dc2 100644 --- a/hw/scsi/vhost-user-scsi.c +++ b/hw/scsi/vhost-user-scsi.c @@ -159,7 +159,6 @@ static int vhost_user_scsi_connect(DeviceState *dev, Er= ror **errp) vsc->dev.nvqs =3D VIRTIO_SCSI_VQ_NUM_FIXED + vs->conf.num_queues; vsc->dev.vqs =3D s->vhost_vqs; vsc->dev.vq_index =3D 0; - vsc->dev.backend_features =3D 0; =20 ret =3D vhost_dev_init(&vsc->dev, &s->vhost_user, VHOST_BACKEND_TYPE_U= SER, 0, errp); diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index 4532d63653..06179e402e 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -104,7 +104,6 @@ static void vhost_vdpa_device_realize(DeviceState *dev,= Error **errp) v->dev.vqs =3D vqs; v->dev.vq_index =3D 0; v->dev.vq_index_end =3D v->dev.nvqs; - v->dev.backend_features =3D 0; v->started =3D false; =20 ret =3D vhost_vdpa_get_iova_range(v->vhostfd, &iova_range); diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 7615ae2a9b..0ab1b14da5 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1470,14 +1470,15 @@ static int vhost_user_set_features(struct vhost_dev= *dev, int ret; =20 /* - * We need to include any extra backend only feature bits that - * might be needed by our device. Currently this includes the - * VHOST_USER_F_PROTOCOL_FEATURES bit for enabling protocol - * features. + * Don't lose VHOST_USER_F_PROTOCOL_FEATURES, which is vhost-user + * specific. */ - ret =3D vhost_user_set_u64(dev, VHOST_USER_SET_FEATURES, - features | dev->backend_features, - log_enabled); + if (virtio_has_feature(dev->features, VHOST_USER_F_PROTOCOL_FEATURES))= { + features |=3D 1ULL << VHOST_USER_F_PROTOCOL_FEATURES; + } + + ret =3D vhost_user_set_u64(dev, VHOST_USER_SET_FEATURES, features, + log_enabled); =20 if (virtio_has_feature(dev->protocol_features, VHOST_USER_PROTOCOL_F_STATUS)) { @@ -2197,8 +2198,6 @@ static int vhost_user_backend_init(struct vhost_dev *= dev, void *opaque, (dev->config_ops && dev->config_ops->vhost_dev_config_notifier= ); uint64_t protocol_features; =20 - dev->backend_features |=3D 1ULL << VHOST_USER_F_PROTOCOL_FEATURES; - err =3D vhost_user_get_u64(dev, VHOST_USER_GET_PROTOCOL_FEATURES, &protocol_features); if (err < 0) { diff --git a/hw/virtio/virtio-hmp-cmds.c b/hw/virtio/virtio-hmp-cmds.c index 1daae482d3..4bf9a3109d 100644 --- a/hw/virtio/virtio-hmp-cmds.c +++ b/hw/virtio/virtio-hmp-cmds.c @@ -176,8 +176,6 @@ void hmp_virtio_status(Monitor *mon, const QDict *qdict) hmp_virtio_dump_features(mon, s->vhost_dev->features); monitor_printf(mon, " Acked features:\n"); hmp_virtio_dump_features(mon, s->vhost_dev->acked_features); - monitor_printf(mon, " Backend features:\n"); - hmp_virtio_dump_features(mon, s->vhost_dev->backend_features); monitor_printf(mon, " Protocol features:\n"); hmp_virtio_dump_protocols(mon, s->vhost_dev->protocol_features); } diff --git a/hw/virtio/virtio-qmp.c b/hw/virtio/virtio-qmp.c index 968299fda0..916972e331 100644 --- a/hw/virtio/virtio-qmp.c +++ b/hw/virtio/virtio-qmp.c @@ -780,8 +780,6 @@ VirtioStatus *qmp_x_query_virtio_status(const char *pat= h, Error **errp) vdev->guest_features_ex); status->host_features =3D qmp_decode_features(vdev->device_id, vdev->host_features_ex); - status->backend_features =3D qmp_decode_features(vdev->device_id, - vdev->backend_features_ex= ); =20 switch (vdev->device_endian) { case VIRTIO_DEVICE_ENDIAN_LITTLE: @@ -822,8 +820,6 @@ VirtioStatus *qmp_x_query_virtio_status(const char *pat= h, Error **errp) qmp_decode_features(vdev->device_id, hdev->features_ex); status->vhost_dev->acked_features =3D qmp_decode_features(vdev->device_id, hdev->acked_features_ex); - status->vhost_dev->backend_features =3D - qmp_decode_features(vdev->device_id, hdev->backend_features_ex= ); =20 status->vhost_dev->protocol_features =3D qmp_decode_protocols(hdev->protocol_features); diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 1ee639dd7e..3e69e47833 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -100,16 +100,9 @@ struct vhost_dev { * * @features: available features provided by the backend * @acked_features: final negotiated features with front-end driver - * - * @backend_features: this is used in a couple of places to either - * store VHOST_USER_F_PROTOCOL_FEATURES to apply to - * VHOST_USER_SET_FEATURES or VHOST_NET_F_VIRTIO_NET_HDR. Its - * future use should be discouraged and the variable retired as - * its easy to confuse with the VirtIO backend_features. */ VIRTIO_DECLARE_FEATURES(features); VIRTIO_DECLARE_FEATURES(acked_features); - VIRTIO_DECLARE_FEATURES(backend_features); =20 /** * @protocol_features: is the vhost-user only feature set by diff --git a/qapi/virtio.json b/qapi/virtio.json index cd67c4f52e..53ddc6b6a4 100644 --- a/qapi/virtio.json +++ b/qapi/virtio.json @@ -85,8 +85,6 @@ # # @acked-features: vhost_dev acked_features # -# @backend-features: vhost_dev backend_features -# # @protocol-features: vhost_dev protocol_features # # @max-queues: vhost_dev max_queues @@ -106,7 +104,6 @@ 'vq-index': 'int', 'features': 'VirtioDeviceFeatures', 'acked-features': 'VirtioDeviceFeatures', - 'backend-features': 'VirtioDeviceFeatures', 'protocol-features': 'VhostDeviceProtocols', 'max-queues': 'uint64', 'backend-cap': 'uint64', --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848851; cv=none; d=zohomail.com; s=zohoarc; b=Pte3Voilmfd+OpoKJ8wzmr+rmt1vFj685UbQrfi+Uefd7KycoaGjYz9YjOaqTg6EwzCvbA6OKNPbU1a+3JtGgq2I7UjFQi1HCNw8HCJirO9hdwLtLs8gWBt2eSgyTb7O8EaeUs4ebwlo6NyUzFPEwxCzWaw1LjEUzSSyKBiQ4YE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848851; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=NvQ51UZVsgfitVsbjkqqd56rq4yTx4edSqvrjZU/LwA=; b=kX8oJqMqut3Gbo5xrjrU+XCeBGSGIN7KhCP00BL3lkW1eEbhdq7Lo30i7IpRwBG3ao4hydee9kph7477ZA1EAcoTCWOg3D6a9bkDf6YOpLFjSKtKPbWP4gGjyw04djmHkdN24ngvbX63wEmFE9sLuVk0iVSFSnsEUiwjgOgmxrU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 176884885176761.074436511238446; Mon, 19 Jan 2026 10:54:11 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNB-0006Ns-DF; Mon, 19 Jan 2026 13:53:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMt-00068e-Dk for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:51 -0500 Received: from forwardcorp1a.mail.yandex.net ([178.154.239.72]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMp-0005qV-T8 for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:51 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id 5F57EC04DF; Mon, 19 Jan 2026 21:52:45 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-IQ9rfW6h; Mon, 19 Jan 2026 21:52:44 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848764; bh=NvQ51UZVsgfitVsbjkqqd56rq4yTx4edSqvrjZU/LwA=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=wx2o7gPO79ooUBg5O3F6HNpEmvyQz/UDNr7xcU/EZi7S6MqnkOTiARKhE71xBwJT7 C43/d3RAOkEVEfl0L8X1+bZSkcsl9GJkG8sjSjTAAqMDNJSaBCpy0t0ZcDEYDpJKO1 1tPluG0KAooMI0gfvtsmCZK3BvWM+04BRilj2Hfs= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 03/23] vhost-user: introduce vhost_user_has_protocol_feature() helper Date: Mon, 19 Jan 2026 21:52:07 +0300 Message-ID: <20260119185228.203296-4-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.72; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848854726158500 Content-Type: text/plain; charset="utf-8" Make all protocol feature checks in the same way. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- hw/virtio/vhost-user.c | 120 +++++++++++++++++++++-------------------- 1 file changed, 62 insertions(+), 58 deletions(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 0ab1b14da5..0832b8f26c 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -272,6 +272,12 @@ struct scrub_regions { int fd_idx; }; =20 +static bool vhost_user_has_protocol_feature(struct vhost_dev *dev, + uint64_t feature) +{ + return virtio_has_feature(dev->protocol_features, feature); +} + static int vhost_user_read_header(struct vhost_dev *dev, VhostUserMsg *msg) { struct vhost_user *u =3D dev->opaque; @@ -435,8 +441,8 @@ static int vhost_user_set_log_base(struct vhost_dev *de= v, uint64_t base, { int fds[VHOST_USER_MAX_RAM_SLOTS]; size_t fd_num =3D 0; - bool shmfd =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_LOG_SHMFD); + bool shmfd =3D + vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_LOG_SHM= FD); int ret; VhostUserMsg msg =3D { .hdr.request =3D VHOST_USER_SET_LOG_BASE, @@ -1006,11 +1012,11 @@ static int vhost_user_set_mem_table(struct vhost_de= v *dev, int fds[VHOST_MEMORY_BASELINE_NREGIONS]; size_t fd_num =3D 0; bool do_postcopy =3D u->postcopy_listen && u->postcopy_fd.handler; - bool reply_supported =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_= ACK); + bool reply_supported =3D + vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_REPLY_A= CK); bool config_mem_slots =3D - virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS); + vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS); int ret; =20 if (do_postcopy) { @@ -1058,8 +1064,9 @@ static int vhost_user_set_mem_table(struct vhost_dev = *dev, static int vhost_user_set_vring_endian(struct vhost_dev *dev, struct vhost_vring_state *ring) { - bool cross_endian =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_CROSS_END= IAN); + bool cross_endian =3D + vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_CROSS_ENDIAN); VhostUserMsg msg =3D { .hdr.request =3D VHOST_USER_SET_VRING_ENDIAN, .hdr.flags =3D VHOST_USER_VERSION, @@ -1129,8 +1136,9 @@ static int vhost_user_write_sync(struct vhost_dev *de= v, VhostUserMsg *msg, int ret; =20 if (wait_for_reply) { - bool reply_supported =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_ACK); + bool reply_supported =3D + vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_REPLY_ACK); if (reply_supported) { msg->hdr.flags |=3D VHOST_USER_NEED_REPLY_MASK; } @@ -1480,8 +1488,7 @@ static int vhost_user_set_features(struct vhost_dev *= dev, ret =3D vhost_user_set_u64(dev, VHOST_USER_SET_FEATURES, features, log_enabled); =20 - if (virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_STATUS)) { + if (vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_STATUS)= ) { if (!ret) { return vhost_user_add_status(dev, VIRTIO_CONFIG_S_FEATURES_OK); } @@ -1535,8 +1542,8 @@ static int vhost_user_reset_device(struct vhost_dev *= dev) * Historically, reset was not implemented so only reset devices * that are expecting it. */ - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_RESET_DEVICE)) { + if (!vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_RESET_DEVICE)) { return -ENOSYS; } =20 @@ -1593,8 +1600,8 @@ static int vhost_user_backend_handle_vring_host_notif= ier(struct vhost_dev *dev, void *addr; char *name; =20 - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_HOST_NOTIFIER) || + if (!vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_HOST_NOTIFIER) || vdev =3D=3D NULL || queue_idx >=3D virtio_get_num_queues(vdev)) { return -EINVAL; } @@ -1892,13 +1899,13 @@ static int vhost_setup_backend_channel(struct vhost= _dev *dev) }; struct vhost_user *u =3D dev->opaque; int sv[2], ret =3D 0; - bool reply_supported =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_= ACK); + bool reply_supported =3D + vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_REPLY_A= CK); Error *local_err =3D NULL; QIOChannel *ioc; =20 - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_BACKEND_REQ)) { + if (!vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_BACKEND_REQ)) { return 0; } =20 @@ -2146,8 +2153,8 @@ static int vhost_user_postcopy_notifier(NotifierWithR= eturn *notifier, =20 switch (pnd->reason) { case POSTCOPY_NOTIFY_PROBE: - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_PAGEFAULT)) { + if (!vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_PAGEFAULT)) { /* TODO: Get the device name into this error somehow */ error_setg(errp, "vhost-user backend not capable of postcopy"); @@ -2238,7 +2245,7 @@ static int vhost_user_backend_init(struct vhost_dev *= dev, void *opaque, } =20 /* query the max queues we support if backend supports Multiple Qu= eue */ - if (dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_MQ)) { + if (vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_MQ)= ) { err =3D vhost_user_get_u64(dev, VHOST_USER_GET_QUEUE_NUM, &dev->max_queues); if (err < 0) { @@ -2256,18 +2263,18 @@ static int vhost_user_backend_init(struct vhost_dev= *dev, void *opaque, } =20 if (virtio_has_feature(features, VIRTIO_F_IOMMU_PLATFORM) && - !(virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_BACKEND_REQ) && - virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_ACK))) { + !(vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_BACKEND_REQ) && + vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_REPLY_ACK))) { error_setg(errp, "IOMMU support requires reply-ack and " "backend-req protocol features."); return -EINVAL; } =20 /* get max memory regions if backend supports configurable RAM slo= ts */ - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS)= ) { + if (!vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_CONFIGURE_MEM_SLOTS)) { u->user->memory_slots =3D VHOST_MEMORY_BASELINE_NREGIONS; } else { err =3D vhost_user_get_max_memslots(dev, &ram_slots); @@ -2289,8 +2296,8 @@ static int vhost_user_backend_init(struct vhost_dev *= dev, void *opaque, } =20 if (dev->migration_blocker =3D=3D NULL && - !virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_LOG_SHMFD)) { + !vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_LOG_SHMFD)) { error_setg(&dev->migration_blocker, "Migration disabled: vhost-user backend lacks " "VHOST_USER_PROTOCOL_F_LOG_SHMFD feature."); @@ -2359,8 +2366,8 @@ static bool vhost_user_requires_shm_log(struct vhost_= dev *dev) { assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_USER); =20 - return virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_LOG_SHMFD); + return vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_LOG_SHMFD); } =20 static int vhost_user_migration_done(struct vhost_dev *dev, char* mac_addr) @@ -2375,8 +2382,7 @@ static int vhost_user_migration_done(struct vhost_dev= *dev, char* mac_addr) } =20 /* if backend supports VHOST_USER_PROTOCOL_F_RARP ask it to send the R= ARP */ - if (virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_RARP)) { + if (vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_RARP)) { msg.hdr.request =3D VHOST_USER_SEND_RARP; msg.hdr.flags =3D VHOST_USER_VERSION; memcpy((char *)&msg.payload.u64, mac_addr, 6); @@ -2390,11 +2396,11 @@ static int vhost_user_migration_done(struct vhost_d= ev *dev, char* mac_addr) static int vhost_user_net_set_mtu(struct vhost_dev *dev, uint16_t mtu) { VhostUserMsg msg; - bool reply_supported =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_= ACK); + bool reply_supported =3D + vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_REPLY_A= CK); int ret; =20 - if (!(dev->protocol_features & (1ULL << VHOST_USER_PROTOCOL_F_NET_MTU)= )) { + if (!vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_NET_MT= U)) { return 0; } =20 @@ -2454,8 +2460,7 @@ static int vhost_user_get_config(struct vhost_dev *de= v, uint8_t *config, .hdr.size =3D VHOST_USER_CONFIG_HDR_SIZE + config_len, }; =20 - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_CONFIG)) { + if (!vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_CONFIG= )) { error_setg(errp, "VHOST_USER_PROTOCOL_F_CONFIG not supported"); return -EINVAL; } @@ -2498,8 +2503,8 @@ static int vhost_user_set_config(struct vhost_dev *de= v, const uint8_t *data, { int ret; uint8_t *p; - bool reply_supported =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_= ACK); + bool reply_supported =3D + vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_REPLY_A= CK); =20 VhostUserMsg msg =3D { .hdr.request =3D VHOST_USER_SET_CONFIG, @@ -2507,8 +2512,7 @@ static int vhost_user_set_config(struct vhost_dev *de= v, const uint8_t *data, .hdr.size =3D VHOST_USER_CONFIG_HDR_SIZE + size, }; =20 - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_CONFIG)) { + if (!vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_CONFIG= )) { return -ENOTSUP; } =20 @@ -2543,8 +2547,9 @@ static int vhost_user_crypto_create_session(struct vh= ost_dev *dev, uint64_t *session_id) { int ret; - bool crypto_session =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_CRYPTO_SESSIO= N); + bool crypto_session =3D + vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_CRYPTO_SESSION); CryptoDevBackendSessionInfo *backend_info =3D session_info; VhostUserMsg msg =3D { .hdr.request =3D VHOST_USER_CREATE_CRYPTO_SESSION, @@ -2645,8 +2650,9 @@ static int vhost_user_crypto_close_session(struct vhost_dev *dev, uint64_t session_id) { int ret; - bool crypto_session =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_CRYPTO_SESSIO= N); + bool crypto_session =3D + vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_CRYPTO_SESSION); VhostUserMsg msg =3D { .hdr.request =3D VHOST_USER_CLOSE_CRYPTO_SESSION, .hdr.flags =3D VHOST_USER_VERSION, @@ -2691,8 +2697,8 @@ static int vhost_user_get_inflight_fd(struct vhost_de= v *dev, .hdr.size =3D sizeof(msg.payload.inflight), }; =20 - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)) { + if (!vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)) { return 0; } =20 @@ -2759,8 +2765,8 @@ static int vhost_user_set_inflight_fd(struct vhost_de= v *dev, .hdr.size =3D sizeof(msg.payload.inflight), }; =20 - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)) { + if (!vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_INFLIGHT_SHMFD)) { return 0; } =20 @@ -2859,8 +2865,7 @@ void vhost_user_async_close(DeviceState *d, =20 static int vhost_user_dev_start(struct vhost_dev *dev, bool started) { - if (!virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_STATUS)) { + if (!vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_STATUS= )) { return 0; } =20 @@ -2885,16 +2890,15 @@ static void vhost_user_reset_status(struct vhost_de= v *dev) return; } =20 - if (virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_STATUS)) { + if (vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_STATUS)= ) { vhost_user_set_status(dev, 0); } } =20 static bool vhost_user_supports_device_state(struct vhost_dev *dev) { - return virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_DEVICE_STATE); + return vhost_user_has_protocol_feature( + dev, VHOST_USER_PROTOCOL_F_DEVICE_STATE); } =20 static int vhost_user_set_device_state_fd(struct vhost_dev *dev, --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848817; cv=none; d=zohomail.com; s=zohoarc; b=h/ZAS6xPrDKBwEPsorCXaPvxZQskZy59hXTxtCAvMHlr3WC5Aa/N9iyTt9vGbDsYwyIqwMmZu1/743JeTmNAwRbJUOX57qQL7x0EaaWmMYQo6/auYM4QyBnBB96EuNEb4YoYJl3nLtlD4xaGkWhe2qVeqfyYnd/vC4fXDqfoi+E= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848817; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=DFuTIn2Tjqc9PM+UQE8x6AcfFhUYv1zFAL9RV7d+FYY=; b=aHQgM6yDCu3tnaVRFpcoFb5uA1Rm1yC6vlQaG3yRbL5XwCtOMmYSm0JnzNzwJ7faajiS9+q+ax878sJ9Eoz515dv3w3LboTiGqejnyIs2wMifH8N/0O5JBKhvPVOJesyF3r1Q3qajI95/VWBmjuG6pmFqzO3waAfVRrT3uSixC8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848817012684.6150844975629; Mon, 19 Jan 2026 10:53:37 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNB-0006Nu-EX; Mon, 19 Jan 2026 13:53:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMv-0006EL-PL for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:55 -0500 Received: from forwardcorp1b.mail.yandex.net ([178.154.239.136]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMs-0005qo-Ma for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:52 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 7B3CF88506; Mon, 19 Jan 2026 21:52:46 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-aTLLes5y; Mon, 19 Jan 2026 21:52:45 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848765; bh=DFuTIn2Tjqc9PM+UQE8x6AcfFhUYv1zFAL9RV7d+FYY=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=mi8RwhvZEb01Uh5H6hmB3k5PfLJ9Ckl2T2/g6QheVlNy2GsWQ9EErdtXJ8Fx6xkoh p7TP+Ej0CUV6gsYll327H9J3ryqAcPBc2g8Jmzce5H26vTf70OYgLE4+U1cxnRGvJV xEoS1CmdbqAe6CYMnV8Qh7ZD//vpSgcybUOeiANU= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz , "Gonglei (Arei)" , zhenwei pi , Jason Wang Subject: [PATCH v4 04/23] vhost: move protocol_features to vhost_user Date: Mon, 19 Jan 2026 21:52:08 +0300 Message-ID: <20260119185228.203296-5-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.136; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848821689154100 Content-Type: text/plain; charset="utf-8" As comment says: it's only for vhost-user. So, let's move it to corresponding vhost backend realization. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- backends/cryptodev-vhost.c | 1 - hw/net/vhost_net.c | 2 -- hw/virtio/vhost-user.c | 30 +++++++++++++++++++++++++----- hw/virtio/virtio-qmp.c | 6 ++++-- include/hw/virtio/vhost-user.h | 3 +++ include/hw/virtio/vhost.h | 8 -------- 6 files changed, 32 insertions(+), 18 deletions(-) diff --git a/backends/cryptodev-vhost.c b/backends/cryptodev-vhost.c index abdfce33af..c6069f4e5b 100644 --- a/backends/cryptodev-vhost.c +++ b/backends/cryptodev-vhost.c @@ -60,7 +60,6 @@ cryptodev_vhost_init( =20 crypto->cc =3D options->cc; =20 - crypto->dev.protocol_features =3D 0; crypto->backend =3D -1; =20 /* vhost-user needs vq_index to initiate a specific queue pair */ diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index fda90e231e..ca19983126 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -265,9 +265,7 @@ struct vhost_net *vhost_net_init(VhostNetOptions *optio= ns) goto fail; } net->backend =3D r; - net->dev.protocol_features =3D 0; } else { - net->dev.protocol_features =3D 0; net->backend =3D -1; =20 /* vhost-user needs vq_index to initiate a specific queue pair */ diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 0832b8f26c..133a39f7a6 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -11,6 +11,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "hw/virtio/virtio-dmabuf.h" +#include "hw/virtio/virtio-qmp.h" #include "hw/virtio/vhost.h" #include "hw/virtio/virtio-crypto.h" #include "hw/virtio/vhost-user.h" @@ -264,6 +265,14 @@ struct vhost_user { /* Our current regions */ int num_shadow_regions; struct vhost_memory_region shadow_regions[VHOST_USER_MAX_RAM_SLOTS]; + + /** + * @protocol_features: the vhost-user protocol feature set by + * VHOST_USER_SET_PROTOCOL_FEATURES. Protocol features are only + * negotiated if VHOST_USER_F_PROTOCOL_FEATURES has been offered + * by the backend (see @features). + */ + uint64_t protocol_features; }; =20 struct scrub_regions { @@ -275,7 +284,8 @@ struct scrub_regions { static bool vhost_user_has_protocol_feature(struct vhost_dev *dev, uint64_t feature) { - return virtio_has_feature(dev->protocol_features, feature); + struct vhost_user *u =3D dev->opaque; + return virtio_has_feature(u->protocol_features, feature); } =20 static int vhost_user_read_header(struct vhost_dev *dev, VhostUserMsg *msg) @@ -1343,8 +1353,8 @@ static int vhost_set_vring_file(struct vhost_dev *dev, int ret; int fds[VHOST_USER_MAX_RAM_SLOTS]; size_t fd_num =3D 0; - bool reply_supported =3D virtio_has_feature(dev->protocol_features, - VHOST_USER_PROTOCOL_F_REPLY_= ACK); + bool reply_supported =3D + vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_REPLY_A= CK); VhostUserMsg msg =3D { .hdr.request =3D request, .hdr.flags =3D VHOST_USER_VERSION, @@ -2237,8 +2247,8 @@ static int vhost_user_backend_init(struct vhost_dev *= dev, void *opaque, } =20 /* final set of protocol features */ - dev->protocol_features =3D protocol_features; - err =3D vhost_user_set_protocol_features(dev, dev->protocol_featur= es); + u->protocol_features =3D protocol_features; + err =3D vhost_user_set_protocol_features(dev, u->protocol_features= ); if (err < 0) { error_setg_errno(errp, EPROTO, "vhost_backend_init failed"); return -EPROTO; @@ -3029,6 +3039,16 @@ static int vhost_user_check_device_state(struct vhos= t_dev *dev, Error **errp) return 0; } =20 +void vhost_user_qmp_status(struct vhost_dev *dev, VirtioStatus *status) +{ + struct vhost_user *u =3D dev->opaque; + + assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_USER); + + status->vhost_dev->protocol_features =3D + qmp_decode_protocols(u->protocol_features); +} + const VhostOps user_ops =3D { .backend_type =3D VHOST_BACKEND_TYPE_USER, .vhost_backend_init =3D vhost_user_backend_init, diff --git a/hw/virtio/virtio-qmp.c b/hw/virtio/virtio-qmp.c index 916972e331..5e42b7b540 100644 --- a/hw/virtio/virtio-qmp.c +++ b/hw/virtio/virtio-qmp.c @@ -821,12 +821,14 @@ VirtioStatus *qmp_x_query_virtio_status(const char *p= ath, Error **errp) status->vhost_dev->acked_features =3D qmp_decode_features(vdev->device_id, hdev->acked_features_ex); =20 - status->vhost_dev->protocol_features =3D - qmp_decode_protocols(hdev->protocol_features); status->vhost_dev->max_queues =3D hdev->max_queues; status->vhost_dev->backend_cap =3D hdev->backend_cap; status->vhost_dev->log_enabled =3D hdev->log_enabled; status->vhost_dev->log_size =3D hdev->log_size; + + if (hdev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_USER) { + vhost_user_qmp_status(hdev, status); + } } =20 return status; diff --git a/include/hw/virtio/vhost-user.h b/include/hw/virtio/vhost-user.h index 55d5725ef8..ea9d308f4c 100644 --- a/include/hw/virtio/vhost-user.h +++ b/include/hw/virtio/vhost-user.h @@ -10,6 +10,7 @@ =20 #include "chardev/char-fe.h" #include "hw/virtio/virtio.h" +#include "qapi/qapi-types-virtio.h" =20 enum VhostUserProtocolFeature { VHOST_USER_PROTOCOL_F_MQ =3D 0, @@ -111,4 +112,6 @@ void vhost_user_async_close(DeviceState *d, CharFrontend *chardev, struct vhost_dev *vhost, vu_async_close_fn cb); =20 +void vhost_user_qmp_status(struct vhost_dev *dev, VirtioStatus *status); + #endif diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 3e69e47833..e308bc4556 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -104,14 +104,6 @@ struct vhost_dev { VIRTIO_DECLARE_FEATURES(features); VIRTIO_DECLARE_FEATURES(acked_features); =20 - /** - * @protocol_features: is the vhost-user only feature set by - * VHOST_USER_SET_PROTOCOL_FEATURES. Protocol features are only - * negotiated if VHOST_USER_F_PROTOCOL_FEATURES has been offered - * by the backend (see @features). - */ - uint64_t protocol_features; - uint64_t max_queues; uint64_t backend_cap; /* @started: is the vhost device started? */ --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848831; cv=none; d=zohomail.com; s=zohoarc; b=XWLorHWRPox9iPM+HaPJPUJ9RgYa5tpN0QDXwqcQbeW1EguE2JYSUSKiCXe+Xwhbv9FNcreXi4z2HO5IQlOeaASYJveA7JhMERCfIZUyJ3m7ZM9PjPH4ofDCuAR/TmhXOrFKynjNVWd8hp56w3WVM4TtmIDHK2JzP+Lt0QJQAEU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848831; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=5LsdflNZHb4CrWOSNOp97LbJ59M5MGj4xO1MC/HSwD0=; b=NmV+idfDOueQ1XzVnZir2KYj5sGXDoHhkfgsrttcUMk8Lr25V5qVxLpQfr8q4NJw6EuF7ELEiR62eFntUFXVZncXc7uTo97zMYjNj2RdkQEASwLYwMSGSiwyKRosnIMgt1pYv7XYRSX3L6JBQibAYrRxNNh/oIwqe7hZZvZ3JFQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848831390408.066864526132; Mon, 19 Jan 2026 10:53:51 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNB-0006Uc-Oy; Mon, 19 Jan 2026 13:53:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMv-0006EJ-Og for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:55 -0500 Received: from forwardcorp1b.mail.yandex.net ([2a02:6b8:c02:900:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMs-0005r0-SL for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:52 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 96DF980870; Mon, 19 Jan 2026 21:52:47 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-fwJIFl85; Mon, 19 Jan 2026 21:52:47 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848767; bh=5LsdflNZHb4CrWOSNOp97LbJ59M5MGj4xO1MC/HSwD0=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=vQSa93ppPK7oCChxHMrW/bNPKvOXmG3pN/eLSWi6cI3yOZbMS0xfMOstbLmMRx5zs XQ2QHMeBthe1uW+MOpmsK5NzSB8TajuES7bnfbCa0SZtlEZZ1RjiHRFWgs1pRIUMVU 7uN6kp9KpKRcxj9wypFa2hT4464s9ZlIO4kOW+zM= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Raphael Norwitz , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Subject: [PATCH v4 05/23] vhost-user-gpu: drop code duplication Date: Mon, 19 Jan 2026 21:52:09 +0300 Message-ID: <20260119185228.203296-6-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848834530158500 Obviously, this duplicated fragment doesn't make any sense. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Raphael Norwitz Reviewed-by: Daniil Tatianin --- hw/display/vhost-user-gpu.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c index 3f6fb7a803..8911b2a72f 100644 --- a/hw/display/vhost-user-gpu.c +++ b/hw/display/vhost-user-gpu.c @@ -644,10 +644,6 @@ vhost_user_gpu_device_realize(DeviceState *qdev, Error= **errp) VIRTIO_GPU_F_RESOURCE_UUID)) { g->parent_obj.conf.flags |=3D 1 << VIRTIO_GPU_FLAG_RESOURCE_UUID_E= NABLED; } - if (virtio_has_feature(g->vhost->dev.features, - VIRTIO_GPU_F_RESOURCE_UUID)) { - g->parent_obj.conf.flags |=3D 1 << VIRTIO_GPU_FLAG_RESOURCE_UUID_E= NABLED; - } =20 if (!virtio_gpu_base_device_realize(qdev, NULL, NULL, errp)) { return; --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848947; cv=none; d=zohomail.com; s=zohoarc; b=FIiex5mDgmz0Bo+SOQQpZbJQXwpXZR+RWruQhR67Ubcr7n7ak9h4+BgQlWHXfEXY/wMZB7SFK0vo1tm8KtW9Zw1ObYPVN805VBDfJR+eyIzoJOOAw3tmugyJx65tIlxy6XD/qqlxWCZHCIULn+gMEgY4a9odp+GxUwkggSW/HJc= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848947; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=PHrCLXP5M3f9/Dd5bx0gwnaJOB8bwxIceDmWmA7inBE=; b=HbgtCX/vSd+t6Urefuc77upXzjdeJSBmfuwXYnqiJL0aoZK5oOTUc/94Utkhn1tqzG6DmgrXwCOHGHLJRFTwI+igkzwhnBX4syapykVo2svr2pzkQho7EwX/4NmdvLhrPsjN/8GOZFQJY/no9aRWzrqco4WQDhutboYviO9VVSk= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848947600584.8882767163902; Mon, 19 Jan 2026 10:55:47 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNL-0006kn-HN; Mon, 19 Jan 2026 13:53:19 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMv-0006EK-PP for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:55 -0500 Received: from forwardcorp1b.mail.yandex.net ([178.154.239.136]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMs-0005rL-Rs for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:52 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 1A7A68862A; Mon, 19 Jan 2026 21:52:49 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-2OKKYqxP; Mon, 19 Jan 2026 21:52:48 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848768; bh=PHrCLXP5M3f9/Dd5bx0gwnaJOB8bwxIceDmWmA7inBE=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=NHs2gX6ig6IRVzY5A3zf2LNtS3hgzRECXM6Sne+sg6Zn6XONvXy1EP0XaMeLiNg6N HNhuBqpHbXwgylA3efHbLbOuKE2Q4Ofwz/lcsktwdX7eykhz+xKFtbuOsL3QOSRRr2 210E5+3Eko4LRCAg0Z5AyRNSI1Wb9RSLSP3MQk2s= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Jason Wang , =?UTF-8?q?Alex=20Benn=C3=A9e?= Subject: [PATCH v4 06/23] vhost: make vhost_dev.features private Date: Mon, 19 Jan 2026 21:52:10 +0300 Message-ID: <20260119185228.203296-7-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.136; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848949191158500 Content-Type: text/plain; charset="utf-8" It's hard to control where and how do we use this field. Let's cover all usages by getters/setters, and keep direct access to the field only in vhost.c. It will help to control migration of this field in further commits. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin --- hw/display/vhost-user-gpu.c | 7 +++---- hw/net/vhost_net.c | 18 ++++++++--------- hw/virtio/vdpa-dev.c | 2 +- hw/virtio/vhost-user-base.c | 8 ++++++-- hw/virtio/vhost-user.c | 4 ++-- hw/virtio/vhost.c | 6 +++--- hw/virtio/virtio-qmp.c | 2 +- include/hw/virtio/vhost.h | 39 +++++++++++++++++++++++++++++++++++-- net/vhost-vdpa.c | 7 +++---- 9 files changed, 65 insertions(+), 28 deletions(-) diff --git a/hw/display/vhost-user-gpu.c b/hw/display/vhost-user-gpu.c index 8911b2a72f..3566e49a1a 100644 --- a/hw/display/vhost-user-gpu.c +++ b/hw/display/vhost-user-gpu.c @@ -631,17 +631,16 @@ vhost_user_gpu_device_realize(DeviceState *qdev, Erro= r **errp) =20 /* existing backend may send DMABUF, so let's add that requirement */ g->parent_obj.conf.flags |=3D 1 << VIRTIO_GPU_FLAG_DMABUF_ENABLED; - if (virtio_has_feature(g->vhost->dev.features, VIRTIO_GPU_F_VIRGL)) { + if (vhost_dev_has_feature(&g->vhost->dev, VIRTIO_GPU_F_VIRGL)) { g->parent_obj.conf.flags |=3D 1 << VIRTIO_GPU_FLAG_VIRGL_ENABLED; } - if (virtio_has_feature(g->vhost->dev.features, VIRTIO_GPU_F_EDID)) { + if (vhost_dev_has_feature(&g->vhost->dev, VIRTIO_GPU_F_EDID)) { g->parent_obj.conf.flags |=3D 1 << VIRTIO_GPU_FLAG_EDID_ENABLED; } else { error_report("EDID requested but the backend doesn't support it."); g->parent_obj.conf.flags &=3D ~(1 << VIRTIO_GPU_FLAG_EDID_ENABLED); } - if (virtio_has_feature(g->vhost->dev.features, - VIRTIO_GPU_F_RESOURCE_UUID)) { + if (vhost_dev_has_feature(&g->vhost->dev, VIRTIO_GPU_F_RESOURCE_UUID))= { g->parent_obj.conf.flags |=3D 1 << VIRTIO_GPU_FLAG_RESOURCE_UUID_E= NABLED; } =20 diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index ca19983126..323d117735 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -54,8 +54,8 @@ void vhost_net_ack_features_ex(struct vhost_net *net, con= st uint64_t *features) { virtio_features_clear(net->dev.acked_features_ex); if (net->backend =3D=3D -1) { - net->dev.acked_features =3D - net->dev.features & (1ULL << VHOST_USER_F_PROTOCOL_FEATURES); + net->dev.acked_features =3D (vhost_dev_features(&net->dev) & + (1ULL << VHOST_USER_F_PROTOCOL_FEATURES)); } else if (!qemu_has_vnet_hdr(net->nc)) { net->dev.acked_features =3D 1ULL << VHOST_NET_F_VIRTIO_NET_HDR; } @@ -282,15 +282,15 @@ struct vhost_net *vhost_net_init(VhostNetOptions *opt= ions) if (backend_kernel) { if (!qemu_has_vnet_hdr_len(options->net_backend, sizeof(struct virtio_net_hdr_mrg_rxbuf))) { - net->dev.features &=3D ~(1ULL << VIRTIO_NET_F_MRG_RXBUF); + vhost_dev_clear_feature(&net->dev, VIRTIO_NET_F_MRG_RXBUF); } =20 if (!qemu_has_vnet_hdr(options->net_backend) && - (~net->dev.features & (1ULL << VHOST_NET_F_VIRTIO_NET_HDR))) { - fprintf(stderr, "vhost lacks feature mask 0x%llx for backend\n= ", - ~net->dev.features & (1ULL << VHOST_NET_F_VIRTIO_NET_H= DR)); - goto fail; - } + !vhost_dev_has_feature(&net->dev, VHOST_NET_F_VIRTIO_NET_HDR))= { + fprintf(stderr, "vhost lacks VHOST_NET_F_VIRTIO_NET_HDR " + "feature for backend\n"); + goto fail; + } } =20 /* Set sane init value. Override when guest acks. */ @@ -298,7 +298,7 @@ struct vhost_net *vhost_net_init(VhostNetOptions *optio= ns) virtio_features_from_u64(features, options->get_acked_features(net->nc)); if (virtio_features_andnot(missing_features, features, - net->dev.features_ex)) { + vhost_dev_features_ex(&net->dev))) { fprintf(stderr, "vhost lacks feature mask 0x" VIRTIO_FEATURES_= FMT " for backend\n", VIRTIO_FEATURES_PR(missing_features)= ); goto fail; diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index 06179e402e..94188d37bb 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -224,7 +224,7 @@ static uint64_t vhost_vdpa_device_get_features(VirtIODe= vice *vdev, Error **errp) { VhostVdpaDevice *s =3D VHOST_VDPA_DEVICE(vdev); - uint64_t backend_features =3D s->dev.features; + uint64_t backend_features =3D vhost_dev_features(&s->dev); =20 if (!virtio_has_feature(features, VIRTIO_F_IOMMU_PLATFORM)) { virtio_clear_feature(&backend_features, VIRTIO_F_IOMMU_PLATFORM); diff --git a/hw/virtio/vhost-user-base.c b/hw/virtio/vhost-user-base.c index 01ab9ca56b..5bbf4a7367 100644 --- a/hw/virtio/vhost-user-base.c +++ b/hw/virtio/vhost-user-base.c @@ -118,9 +118,13 @@ static uint64_t vub_get_features(VirtIODevice *vdev, uint64_t requested_features, Error **errp) { VHostUserBase *vub =3D VHOST_USER_BASE(vdev); + uint64_t backend_features =3D vhost_dev_features(&vub->vhost_dev); + /* This should be set when the vhost connection initialises */ - g_assert(vub->vhost_dev.features); - return vub->vhost_dev.features & ~(1ULL << VHOST_USER_F_PROTOCOL_FEATU= RES); + g_assert(backend_features); + virtio_clear_feature(&backend_features, VHOST_USER_F_PROTOCOL_FEATURES= ); + + return backend_features; } =20 /* diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 133a39f7a6..6b79f50043 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -1252,7 +1252,7 @@ static int vhost_user_set_vring_enable(struct vhost_d= ev *dev, int enable) { int i; =20 - if (!virtio_has_feature(dev->features, VHOST_USER_F_PROTOCOL_FEATURES)= ) { + if (!vhost_dev_has_feature(dev, VHOST_USER_F_PROTOCOL_FEATURES)) { /* * For vhost-user devices, if VHOST_USER_F_PROTOCOL_FEATURES has n= ot * been negotiated, the rings start directly in the enabled state, @@ -1491,7 +1491,7 @@ static int vhost_user_set_features(struct vhost_dev *= dev, * Don't lose VHOST_USER_F_PROTOCOL_FEATURES, which is vhost-user * specific. */ - if (virtio_has_feature(dev->features, VHOST_USER_F_PROTOCOL_FEATURES))= { + if (vhost_dev_has_feature(dev, VHOST_USER_F_PROTOCOL_FEATURES)) { features |=3D 1ULL << VHOST_USER_F_PROTOCOL_FEATURES; } =20 diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 29f2c75f1e..40440c6d68 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1612,7 +1612,7 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, } } =20 - virtio_features_copy(hdev->features_ex, features); + virtio_features_copy(hdev->_features_ex, features); =20 hdev->memory_listener =3D (MemoryListener) { .name =3D "vhost", @@ -1635,7 +1635,7 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, }; =20 if (hdev->migration_blocker =3D=3D NULL) { - if (!virtio_has_feature_ex(hdev->features_ex, VHOST_F_LOG_ALL)) { + if (!vhost_dev_has_feature_ex(hdev, VHOST_F_LOG_ALL)) { error_setg(&hdev->migration_blocker, "Migration disabled: vhost lacks VHOST_F_LOG_ALL fe= ature."); } else if (vhost_dev_log_is_shared(hdev) && !qemu_memfd_alloc_chec= k()) { @@ -1909,7 +1909,7 @@ void vhost_get_features_ex(struct vhost_dev *hdev, const int *bit =3D feature_bits; =20 while (*bit !=3D VHOST_INVALID_FEATURE_BIT) { - if (!virtio_has_feature_ex(hdev->features_ex, *bit)) { + if (!vhost_dev_has_feature_ex(hdev, *bit)) { virtio_clear_feature_ex(features, *bit); } bit++; diff --git a/hw/virtio/virtio-qmp.c b/hw/virtio/virtio-qmp.c index 5e42b7b540..f0c15ba27c 100644 --- a/hw/virtio/virtio-qmp.c +++ b/hw/virtio/virtio-qmp.c @@ -817,7 +817,7 @@ VirtioStatus *qmp_x_query_virtio_status(const char *pat= h, Error **errp) status->vhost_dev->nvqs =3D hdev->nvqs; status->vhost_dev->vq_index =3D hdev->vq_index; status->vhost_dev->features =3D - qmp_decode_features(vdev->device_id, hdev->features_ex); + qmp_decode_features(vdev->device_id, vhost_dev_features_ex(hde= v)); status->vhost_dev->acked_features =3D qmp_decode_features(vdev->device_id, hdev->acked_features_ex); =20 diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index e308bc4556..1ba1af1d86 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -98,10 +98,11 @@ struct vhost_dev { * offered by a backend which may be a subset of the total * features eventually offered to the guest. * - * @features: available features provided by the backend + * @_features: available features provided by the backend, private, + * direct access only in vhost.h/vhost.c * @acked_features: final negotiated features with front-end driver */ - VIRTIO_DECLARE_FEATURES(features); + VIRTIO_DECLARE_FEATURES(_features); VIRTIO_DECLARE_FEATURES(acked_features); =20 uint64_t max_queues; @@ -403,6 +404,40 @@ int vhost_dev_get_inflight(struct vhost_dev *dev, uint= 16_t queue_size, struct vhost_inflight *inflight); bool vhost_dev_has_iommu(struct vhost_dev *dev); =20 +static inline bool vhost_dev_has_feature(struct vhost_dev *dev, + uint64_t feature) +{ + return virtio_has_feature(dev->_features, feature); +} + +static inline bool vhost_dev_has_feature_ex(struct vhost_dev *dev, + uint64_t feature) +{ + return virtio_has_feature_ex(dev->_features_ex, feature); +} + +static inline uint64_t vhost_dev_features(struct vhost_dev *dev) +{ + return dev->_features; +} + +static inline const uint64_t *vhost_dev_features_ex(struct vhost_dev *dev) +{ + return dev->_features_ex; +} + +static inline void vhost_dev_clear_feature(struct vhost_dev *dev, + uint64_t feature) +{ + virtio_clear_feature(&dev->_features, feature); +} + +static inline void vhost_dev_clear_feature_ex(struct vhost_dev *dev, + uint64_t feature) +{ + virtio_clear_feature_ex(dev->_features_ex, feature); +} + #ifdef CONFIG_VHOST int vhost_reset_device(struct vhost_dev *hdev); #else diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 74d26a9497..0af0d3bdd3 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -256,15 +256,14 @@ static bool vhost_vdpa_get_vnet_hash_supported_types(= NetClientState *nc, { assert(nc->info->type =3D=3D NET_CLIENT_DRIVER_VHOST_VDPA); VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); - uint64_t features =3D s->vhost_vdpa.dev->features; int fd =3D s->vhost_vdpa.shared->device_fd; struct { struct vhost_vdpa_config hdr; uint32_t supported_hash_types; } config; =20 - if (!virtio_has_feature(features, VIRTIO_NET_F_HASH_REPORT) && - !virtio_has_feature(features, VIRTIO_NET_F_RSS)) { + if (!vhost_dev_has_feature(s->vhost_vdpa.dev, VIRTIO_NET_F_HASH_REPORT= ) && + !vhost_dev_has_feature(s->vhost_vdpa.dev, VIRTIO_NET_F_RSS)) { return false; } =20 @@ -585,7 +584,7 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc) * If we early return in these cases SVQ will not be enabled. The migr= ation * will be blocked as long as vhost-vdpa backends will not offer _F_LO= G. */ - if (!vhost_vdpa_net_valid_svq_features(v->dev->features, NULL)) { + if (!vhost_vdpa_net_valid_svq_features(vhost_dev_features(v->dev), NUL= L)) { return 0; } =20 --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848867; cv=none; d=zohomail.com; s=zohoarc; b=lkDMwxiu0brVwxQr3UdAaV4ZdiPiEgNUONgfIx40AOTVVSgoecBGnboXolsOYJcqv5HxdjEkjdsvrUW5aVGwxEgkRz29VVwYhTVWfgI7wnHFo325+4hLvH4q5krXG0/yIZG2/C7saEythDWlT2f+vqBd1fiOMcfcM+64S7XU4l8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848867; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=jgwyRL487Sc6PAURrYwWU1dEaoHIWWSkYtd7+IgD4R8=; b=TPtedEBGddRKqj4CoAltfgxzHDa2I8JKBS/K4S/5wWGHGtXzvjY7gaqO5OewCiLtlZVPRM7/kOY+aORMR0AyhgaoQbRe9zXfNXXETJpYH/5shzLkstiUGemK+D+YuM1td58azxXywNcd2/eL7rn2U21IlULOgu7lIUBswelQkWI= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848867526392.0566585947678; Mon, 19 Jan 2026 10:54:27 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNE-0006Yy-3e; Mon, 19 Jan 2026 13:53:13 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMx-0006Ge-Kq; Mon, 19 Jan 2026 13:52:57 -0500 Received: from forwardcorp1d.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMv-0005rZ-EZ; Mon, 19 Jan 2026 13:52:54 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 45CF0806F0; Mon, 19 Jan 2026 21:52:50 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-iN53xzna; Mon, 19 Jan 2026 21:52:49 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848769; bh=jgwyRL487Sc6PAURrYwWU1dEaoHIWWSkYtd7+IgD4R8=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=cjLsbepAnsVqtAGvbpbFzu22WYW8WxXlrhEXSZYtG1GOvSlCkgabD0mFwWz3r7G/J L6WUriqm9OvhyGrxsSVP2FLYjvOTE33KY0e7/wcAamjUwtJ4kMfdYhdgbX5EfPsfNK 11gbA6BgA5L08ypOFCcsn4n4EPQ/GzYjq4IGDaVs= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Cornelia Huck , Halil Pasic , Eric Farman , Thomas Huth , Richard Henderson , Ilya Leoshkevich , David Hildenbrand , Christian Borntraeger , Matthew Rosato , qemu-s390x@nongnu.org (open list:virtio-ccw) Subject: [PATCH v4 07/23] virtio-ccw: virtio_ccw_set_guest_notifier(): fix failure path Date: Mon, 19 Jan 2026 21:52:11 +0300 Message-ID: <20260119185228.203296-8-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848870736154100 Content-Type: text/plain; charset="utf-8" We leak notifier initialization on that failure path. Let's cleanup it. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Eric Farman Reviewed-by: Halil Pasic Reviewed-by: Thomas Huth --- hw/s390x/virtio-ccw.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index 6855e20d09..ba55bf4fe9 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -1038,6 +1038,7 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwDev= ice *dev, int n, if (r) { virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); + event_notifier_cleanup(notifier); return r; } } --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848918; cv=none; d=zohomail.com; s=zohoarc; b=l0xVTSnxPq9R2mdLM1A6PnQevpF+h5g45brtOPMU7unAeMuKWrNVuLbKm790Ia7LNZtxhKiLT04kt+n5YlRtAbSOccbt1IzcuNvdQmeTtub+PSR64/4iEFSTBuo6tUbz8JwcHUuu1VgdYNfaM7FGFKTEx5866Ny/AmuXJ2ir6/Q= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848918; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=5nlRg5vlc2ub3zrV/2TnL9u9TtBBvZvy1d4lNhd67MU=; b=eaDBpgdAOOvBI9fVGWzgMiXCd1zaEJQGWRSsDplmeNognnn0+HVh7UP60KxXzHZ/OYE7U5pDoY18bxYYsby2cd3wFHQbkg0TYtHCjCK+t2R/cnOqlM9oEHpW1fNhgAHj1FAlJseb7cXV66ptnutU8bBBZEs4BMpMsdkQj0ppIhc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848918655622.5256784225426; Mon, 19 Jan 2026 10:55:18 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNP-0006s7-H1; Mon, 19 Jan 2026 13:53:23 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMz-0006I3-FK; Mon, 19 Jan 2026 13:52:59 -0500 Received: from forwardcorp1a.mail.yandex.net ([178.154.239.72]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMv-0005rz-QA; Mon, 19 Jan 2026 13:52:57 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id 3F226C04D9; Mon, 19 Jan 2026 21:52:51 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-TveJty7k; Mon, 19 Jan 2026 21:52:50 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848770; bh=5nlRg5vlc2ub3zrV/2TnL9u9TtBBvZvy1d4lNhd67MU=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=sH1wI8TE0GRCxGK1QVz9LRGK1sq4q5tezosV3j2miJ71m5SKMdskNVDqGPVldMRs4 HORyuyi03WKVsnpf2Kmets8khNz/BflAvHOSZfDwiSUNRTLxQDXCO18I7HbpOBwypn W4Lk3PnFJaU06gkQu2L3yYplDs6umYGHL2ptBDhw= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Cornelia Huck , Halil Pasic , Eric Farman , Richard Henderson , Ilya Leoshkevich , David Hildenbrand , Thomas Huth , Christian Borntraeger , Matthew Rosato , qemu-s390x@nongnu.org (open list:virtio-ccw) Subject: [PATCH v4 08/23] virtio: move common part of _set_guest_notifier to generic code Date: Mon, 19 Jan 2026 21:52:12 +0300 Message-ID: <20260119185228.203296-9-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.72; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848920742158500 Content-Type: text/plain; charset="utf-8" virtio-pci, virtio-mmio and virtio-ccw handle config notifier equally but with different code (mmio adds a separate function, when pci use common function). Let's chose the more compact way (pci) and reuse it for mmio. Signed-off-by: Vladimir Sementsov-Ogievskiy Acked-by: Eric Farman # s390 --- hw/s390x/virtio-ccw.c | 35 ++++++++++++------------- hw/virtio/virtio-mmio.c | 41 +++++------------------------ hw/virtio/virtio-pci.c | 34 +++--------------------- hw/virtio/virtio.c | 48 +++++++++++++++++++++++++++++++--- include/hw/virtio/virtio-pci.h | 3 --- include/hw/virtio/virtio.h | 16 +++++++++--- 6 files changed, 84 insertions(+), 93 deletions(-) diff --git a/hw/s390x/virtio-ccw.c b/hw/s390x/virtio-ccw.c index ba55bf4fe9..f99d1e7cd8 100644 --- a/hw/s390x/virtio-ccw.c +++ b/hw/s390x/virtio-ccw.c @@ -1025,20 +1025,27 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwD= evice *dev, int n, VirtQueue *vq =3D virtio_get_queue(vdev, n); EventNotifier *notifier =3D virtio_queue_get_guest_notifier(vq); VirtioDeviceClass *k =3D VIRTIO_DEVICE_GET_CLASS(vdev); + int r; =20 - if (assign) { - int r =3D event_notifier_init(notifier, 0); - - if (r < 0) { - return r; + if (!assign) { + if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) { + k->guest_notifier_mask(vdev, n, true); } - virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); + if (with_irqfd) { + virtio_ccw_remove_irqfd(dev, n); + } + } + + r =3D virtio_queue_set_guest_notifier(vdev, n, assign, with_irqfd); + if (r < 0) { + return r; + } + + if (assign) { if (with_irqfd) { r =3D virtio_ccw_add_irqfd(dev, n); if (r) { - virtio_queue_set_guest_notifier_fd_handler(vq, false, - with_irqfd); - event_notifier_cleanup(notifier); + virtio_queue_set_guest_notifier(vdev, n, false, with_irqfd= ); return r; } } @@ -1054,16 +1061,8 @@ static int virtio_ccw_set_guest_notifier(VirtioCcwDe= vice *dev, int n, k->guest_notifier_pending(vdev, n)) { event_notifier_set(notifier); } - } else { - if (k->guest_notifier_mask && vdev->use_guest_notifier_mask) { - k->guest_notifier_mask(vdev, n, true); - } - if (with_irqfd) { - virtio_ccw_remove_irqfd(dev, n); - } - virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); - event_notifier_cleanup(notifier); } + return 0; } =20 diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c index 0b0412b22f..b41c3614be 100644 --- a/hw/virtio/virtio-mmio.c +++ b/hw/virtio/virtio-mmio.c @@ -670,18 +670,11 @@ static int virtio_mmio_set_guest_notifier(DeviceState= *d, int n, bool assign, VirtIOMMIOProxy *proxy =3D VIRTIO_MMIO(d); VirtIODevice *vdev =3D virtio_bus_get_device(&proxy->bus); VirtioDeviceClass *vdc =3D VIRTIO_DEVICE_GET_CLASS(vdev); - VirtQueue *vq =3D virtio_get_queue(vdev, n); - EventNotifier *notifier =3D virtio_queue_get_guest_notifier(vq); + int r; =20 - if (assign) { - int r =3D event_notifier_init(notifier, 0); - if (r < 0) { - return r; - } - virtio_queue_set_guest_notifier_fd_handler(vq, true, with_irqfd); - } else { - virtio_queue_set_guest_notifier_fd_handler(vq, false, with_irqfd); - event_notifier_cleanup(notifier); + r =3D virtio_queue_set_guest_notifier(vdev, n, assign, with_irqfd); + if (r < 0) { + return r; } =20 if (vdc->guest_notifier_mask && vdev->use_guest_notifier_mask) { @@ -690,30 +683,7 @@ static int virtio_mmio_set_guest_notifier(DeviceState = *d, int n, bool assign, =20 return 0; } -static int virtio_mmio_set_config_guest_notifier(DeviceState *d, bool assi= gn, - bool with_irqfd) -{ - VirtIOMMIOProxy *proxy =3D VIRTIO_MMIO(d); - VirtIODevice *vdev =3D virtio_bus_get_device(&proxy->bus); - VirtioDeviceClass *vdc =3D VIRTIO_DEVICE_GET_CLASS(vdev); - EventNotifier *notifier =3D virtio_config_get_guest_notifier(vdev); - int r =3D 0; =20 - if (assign) { - r =3D event_notifier_init(notifier, 0); - if (r < 0) { - return r; - } - virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irq= fd); - } else { - virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irq= fd); - event_notifier_cleanup(notifier); - } - if (vdc->guest_notifier_mask && vdev->use_guest_notifier_mask) { - vdc->guest_notifier_mask(vdev, VIRTIO_CONFIG_IRQ_IDX, !assign); - } - return r; -} static int virtio_mmio_set_guest_notifiers(DeviceState *d, int nvqs, bool assign) { @@ -735,7 +705,8 @@ static int virtio_mmio_set_guest_notifiers(DeviceState = *d, int nvqs, goto assign_error; } } - r =3D virtio_mmio_set_config_guest_notifier(d, assign, with_irqfd); + r =3D virtio_mmio_set_guest_notifier(d, VIRTIO_CONFIG_IRQ_IDX, assign, + with_irqfd); if (r < 0) { goto assign_error; } diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index b273eb2691..e7d5e19b32 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -1208,43 +1208,17 @@ static void virtio_pci_vector_poll(PCIDevice *dev, } } =20 -void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueu= e *vq, - int n, bool assign, - bool with_irqfd) -{ - if (n =3D=3D VIRTIO_CONFIG_IRQ_IDX) { - virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irq= fd); - } else { - virtio_queue_set_guest_notifier_fd_handler(vq, assign, with_irqfd); - } -} - static int virtio_pci_set_guest_notifier(DeviceState *d, int n, bool assig= n, bool with_irqfd) { VirtIOPCIProxy *proxy =3D to_virtio_pci_proxy(d); VirtIODevice *vdev =3D virtio_bus_get_device(&proxy->bus); VirtioDeviceClass *vdc =3D VIRTIO_DEVICE_GET_CLASS(vdev); - VirtQueue *vq =3D NULL; - EventNotifier *notifier =3D NULL; + int r; =20 - if (n =3D=3D VIRTIO_CONFIG_IRQ_IDX) { - notifier =3D virtio_config_get_guest_notifier(vdev); - } else { - vq =3D virtio_get_queue(vdev, n); - notifier =3D virtio_queue_get_guest_notifier(vq); - } - - if (assign) { - int r =3D event_notifier_init(notifier, 0); - if (r < 0) { - return r; - } - virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, true, with_i= rqfd); - } else { - virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, false, - with_irqfd); - event_notifier_cleanup(notifier); + r =3D virtio_queue_set_guest_notifier(vdev, n, assign, with_irqfd); + if (r < 0) { + return r; } =20 if (!msix_enabled(&proxy->pci_dev) && diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 3dc9423eae..ea43ea620c 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -3828,8 +3828,10 @@ static void virtio_config_guest_notifier_read(EventN= otifier *n) virtio_notify_config(vdev); } } -void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign, - bool with_irqfd) + +static void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, + bool assign, + bool with_irqfd) { if (assign && !with_irqfd) { event_notifier_set_handler(&vq->guest_notifier, @@ -3844,7 +3846,7 @@ void virtio_queue_set_guest_notifier_fd_handler(VirtQ= ueue *vq, bool assign, } } =20 -void virtio_config_set_guest_notifier_fd_handler(VirtIODevice *vdev, +static void virtio_config_set_guest_notifier_fd_handler(VirtIODevice *vdev, bool assign, bool with_ir= qfd) { EventNotifier *n; @@ -3861,6 +3863,46 @@ void virtio_config_set_guest_notifier_fd_handler(Vir= tIODevice *vdev, } } =20 +static void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, + VirtQueue *vq, + int n, bool assign, + bool with_irqfd) +{ + if (n =3D=3D VIRTIO_CONFIG_IRQ_IDX) { + virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irq= fd); + } else { + virtio_queue_set_guest_notifier_fd_handler(vq, assign, with_irqfd); + } +} + +int virtio_queue_set_guest_notifier(VirtIODevice *vdev, int n, bool assign, + bool with_irqfd) +{ + VirtQueue *vq =3D NULL; + EventNotifier *notifier =3D NULL; + + if (n =3D=3D VIRTIO_CONFIG_IRQ_IDX) { + notifier =3D virtio_config_get_guest_notifier(vdev); + } else { + vq =3D virtio_get_queue(vdev, n); + notifier =3D virtio_queue_get_guest_notifier(vq); + } + + if (assign) { + int r =3D event_notifier_init(notifier, 0); + if (r < 0) { + return r; + } + virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, true, with_i= rqfd); + } else { + virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, false, + with_irqfd); + event_notifier_cleanup(notifier); + } + + return 0; +} + EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq) { return &vq->guest_notifier; diff --git a/include/hw/virtio/virtio-pci.h b/include/hw/virtio/virtio-pci.h index 639752977e..2a5b65f374 100644 --- a/include/hw/virtio/virtio-pci.h +++ b/include/hw/virtio/virtio-pci.h @@ -263,9 +263,6 @@ void virtio_pci_types_register(const VirtioPCIDeviceTyp= eInfo *t); * @fixed_queues. */ unsigned virtio_pci_optimal_num_queues(unsigned fixed_queues); -void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, VirtQueu= e *vq, - int n, bool assign, - bool with_irqfd); =20 int virtio_pci_add_shm_cap(VirtIOPCIProxy *proxy, uint8_t bar, uint64_t of= fset, uint64_t length, uint8_t id); diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index 27cd98d2fe..25ef7c9dff 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -420,8 +420,6 @@ void virtio_queue_update_used_idx(VirtIODevice *vdev, i= nt n); VirtQueue *virtio_get_queue(VirtIODevice *vdev, int n); uint16_t virtio_get_queue_index(VirtQueue *vq); EventNotifier *virtio_queue_get_guest_notifier(VirtQueue *vq); -void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, bool assign, - bool with_irqfd); int virtio_device_start_ioeventfd(VirtIODevice *vdev); int virtio_device_grab_ioeventfd(VirtIODevice *vdev); void virtio_device_release_ioeventfd(VirtIODevice *vdev); @@ -435,8 +433,18 @@ void virtio_queue_aio_detach_host_notifier(VirtQueue *= vq, AioContext *ctx); VirtQueue *virtio_vector_first_queue(VirtIODevice *vdev, uint16_t vector); VirtQueue *virtio_vector_next_queue(VirtQueue *vq); EventNotifier *virtio_config_get_guest_notifier(VirtIODevice *vdev); -void virtio_config_set_guest_notifier_fd_handler(VirtIODevice *vdev, - bool assign, bool with_ir= qfd); + +/** + * virtio_queue_set_guest_notifier - set/unset queue or config guest + * notifier + * + * @vdev: the VirtIO device + * @n: queue number, or VIRTIO_CONFIG_IRQ_IDX to set config notifer + * @assign: true to set notifier, false to unset + * @with_irqfd: irqfd enabled + */ +int virtio_queue_set_guest_notifier(VirtIODevice *vdev, int n, bool assign, + bool with_irqfd); =20 static inline void virtio_add_feature(uint64_t *features, unsigned int fbi= t) { --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848887; cv=none; d=zohomail.com; s=zohoarc; b=Fib0XuOGJPUINIOKcmHCk+/nCp+BzxCVn2xpmbVxLRCXLLJrh/i2JdjyUHnO1kkwIgoGfUI9LofwJpSmjqc37xJFI5iI9GYzzfZVAh62HNtHb3IEfYpdwSr2pEbg5V0ralBaUzyP3b5CyMXjvD3E3C4j99XOToEJ9RjCLnSpwY4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848887; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=gB32fo01nBl3yz5rcjZHjIyhRdRouxZXm5bV/tzNS/Y=; b=ONi4jjkBbuuui9Y4mNtvxZht3g+oVH2bz1Rp7uT2TBkD+l8PgKwsF7HDxZF0o1Z+q+TLoPgDG1FI0ByNtGK0+Jg7Eqcpj1ZUXd8skg+Bzt9DpaJdNT+X+vhoFzz8O6P8LUHSmaTyoxYqco0rr48rmdc1wyOJjrKnTM326ONztso= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848887090236.84899312157245; Mon, 19 Jan 2026 10:54:47 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNE-0006YY-18; Mon, 19 Jan 2026 13:53:13 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMx-0006Gq-Ls for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:57 -0500 Received: from forwardcorp1d.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMv-0005s9-HD for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:54 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id E1419804AA; Mon, 19 Jan 2026 21:52:51 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-NLf3n8VJ; Mon, 19 Jan 2026 21:52:51 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848771; bh=gB32fo01nBl3yz5rcjZHjIyhRdRouxZXm5bV/tzNS/Y=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=hxtWDL7V+5EuCHTPDC50IOA2rf1Hw/zLJJnVqYcfoPvJkjjThVnamLdQMsCypnqeH gZNTgpoG3Xk6ZLxtDLpeaPBBYNXSNq7rmMgn4z4cdm4tEnZDcmCKAo1oaEhUinIV0F RoPCU/Ei5oAjWCJjxO/14tyPibsQ590vxsHKXnk0= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru Subject: [PATCH v4 09/23] virtio: drop *_set_guest_notifier_fd_handler() helpers Date: Mon, 19 Jan 2026 21:52:13 +0300 Message-ID: <20260119185228.203296-10-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848888534158500 Content-Type: text/plain; charset="utf-8" Now they don't make code more readable. Let's better put the whole logic into virtio_queue_set_guest_notifier(). Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin --- hw/virtio/virtio.c | 76 +++++++++++----------------------------------- 1 file changed, 17 insertions(+), 59 deletions(-) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index ea43ea620c..692c1979fd 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -3829,74 +3829,32 @@ static void virtio_config_guest_notifier_read(Event= Notifier *n) } } =20 -static void virtio_queue_set_guest_notifier_fd_handler(VirtQueue *vq, - bool assign, - bool with_irqfd) -{ - if (assign && !with_irqfd) { - event_notifier_set_handler(&vq->guest_notifier, - virtio_queue_guest_notifier_read); - } else { - event_notifier_set_handler(&vq->guest_notifier, NULL); - } - if (!assign) { - /* Test and clear notifier before closing it, - * in case poll callback didn't have time to run. */ - virtio_queue_guest_notifier_read(&vq->guest_notifier); - } -} - -static void virtio_config_set_guest_notifier_fd_handler(VirtIODevice *vdev, - bool assign, bool with_ir= qfd) -{ - EventNotifier *n; - n =3D &vdev->config_notifier; - if (assign && !with_irqfd) { - event_notifier_set_handler(n, virtio_config_guest_notifier_read); - } else { - event_notifier_set_handler(n, NULL); - } - if (!assign) { - /* Test and clear notifier before closing it,*/ - /* in case poll callback didn't have time to run. */ - virtio_config_guest_notifier_read(n); - } -} - -static void virtio_pci_set_guest_notifier_fd_handler(VirtIODevice *vdev, - VirtQueue *vq, - int n, bool assign, - bool with_irqfd) -{ - if (n =3D=3D VIRTIO_CONFIG_IRQ_IDX) { - virtio_config_set_guest_notifier_fd_handler(vdev, assign, with_irq= fd); - } else { - virtio_queue_set_guest_notifier_fd_handler(vq, assign, with_irqfd); - } -} - int virtio_queue_set_guest_notifier(VirtIODevice *vdev, int n, bool assign, bool with_irqfd) { - VirtQueue *vq =3D NULL; - EventNotifier *notifier =3D NULL; - - if (n =3D=3D VIRTIO_CONFIG_IRQ_IDX) { - notifier =3D virtio_config_get_guest_notifier(vdev); - } else { - vq =3D virtio_get_queue(vdev, n); - notifier =3D virtio_queue_get_guest_notifier(vq); - } + bool is_config =3D n =3D=3D VIRTIO_CONFIG_IRQ_IDX; + VirtQueue *vq =3D is_config ? NULL : virtio_get_queue(vdev, n); + EventNotifier *notifier =3D is_config ? + virtio_config_get_guest_notifier(vdev) : + virtio_queue_get_guest_notifier(vq); + EventNotifierHandler *read_fn =3D is_config ? + virtio_config_guest_notifier_read : + virtio_queue_guest_notifier_read; =20 if (assign) { int r =3D event_notifier_init(notifier, 0); if (r < 0) { return r; } - virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, true, with_i= rqfd); - } else { - virtio_pci_set_guest_notifier_fd_handler(vdev, vq, n, false, - with_irqfd); + } + + event_notifier_set_handler(notifier, + (assign && !with_irqfd) ? read_fn : NULL); + + if (!assign) { + /* Test and clear notifier before closing it,*/ + /* in case poll callback didn't have time to run. */ + read_fn(notifier); event_notifier_cleanup(notifier); } =20 --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848906; cv=none; d=zohomail.com; s=zohoarc; b=idaOZMSQXDneHA0BJsU8Rq/YLIIfpiOTboOe7YYxk+JsI2onczEpVVzhEEy35tCTLXkdYAJCy2vRsazU1uDziBt/ecR7XuHNGh9uduegdIDxce7gFPDdKXPyBMnSCXNYwlUPftPKq16tASHU0lV/9xOgxwHCjUj+RXmjxtXrgvs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848906; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=pg6yfPYIrAw+BAgeEu2ky66e5bQZASGXhxdDuhbTxA8=; b=li10DWG0fR5J2qvM9nmYyjDbNxf49A+V1ktwyW72HBk2ChkjxWjMn5euFNZNcQK1YBG9hQAx6Y4BWWebPzmCei25CGZ5Z+RF24cPBeiN4i5tndgjhDqPzcfomfp0ib0X+kHSsTpod33yo3APtIS+QMiFXYbk8bFAzQ/w4ZlYf+Q= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848906651668.4399327590975; Mon, 19 Jan 2026 10:55:06 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNT-000764-Mf; Mon, 19 Jan 2026 13:53:27 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN0-0006IO-7H for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:59 -0500 Received: from forwardcorp1a.mail.yandex.net ([178.154.239.72]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMx-0005sF-Bp for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:57 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id A604FC04DF; Mon, 19 Jan 2026 21:52:52 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-tx5J9s5b; Mon, 19 Jan 2026 21:52:52 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848772; bh=pg6yfPYIrAw+BAgeEu2ky66e5bQZASGXhxdDuhbTxA8=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=VYMVmOIRskg97ijzESipk8P9ZeVSIkYWVGqXzrwUXFmwFdGAWN/C0DSYMEqxNW++a rBGANH3we8iMXOEBm46xShaShplNEYVBmTXcyg7hx3ut1e5XUEm2BrC+WPtjqIF1Rp w0jpHPrKDNqvxl0iebjUmwBmWzfm3pW0NnfNmuXI= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 10/23] vhost-user: keep QIOChannelSocket for backend channel Date: Mon, 19 Jan 2026 21:52:14 +0300 Message-ID: <20260119185228.203296-11-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.72; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848908838154100 Content-Type: text/plain; charset="utf-8" Keep QIOChannelSocket pointer instead of more generic QIOChannel. No real difference for now, but it would be simpler to migrate socket fd in further commit. Signed-off-by: Vladimir Sementsov-Ogievskiy Acked-by: Raphael Norwitz Reviewed-by: Daniil Tatianin --- hw/virtio/vhost-user.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index 6b79f50043..aedd5a80ff 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -244,7 +244,7 @@ struct vhost_user { struct vhost_dev *dev; /* Shared between vhost devs of the same virtio device */ VhostUserState *user; - QIOChannel *backend_ioc; + QIOChannelSocket *backend_sioc; GSource *backend_src; NotifierWithReturn postcopy_notifier; struct PostCopyFD postcopy_fd; @@ -1799,8 +1799,8 @@ static void close_backend_channel(struct vhost_user *= u) g_source_destroy(u->backend_src); g_source_unref(u->backend_src); u->backend_src =3D NULL; - object_unref(OBJECT(u->backend_ioc)); - u->backend_ioc =3D NULL; + object_unref(OBJECT(u->backend_sioc)); + u->backend_sioc =3D NULL; } =20 static gboolean backend_read(QIOChannel *ioc, GIOCondition condition, @@ -1912,7 +1912,6 @@ static int vhost_setup_backend_channel(struct vhost_d= ev *dev) bool reply_supported =3D vhost_user_has_protocol_feature(dev, VHOST_USER_PROTOCOL_F_REPLY_A= CK); Error *local_err =3D NULL; - QIOChannel *ioc; =20 if (!vhost_user_has_protocol_feature( dev, VHOST_USER_PROTOCOL_F_BACKEND_REQ)) { @@ -1925,15 +1924,15 @@ static int vhost_setup_backend_channel(struct vhost= _dev *dev) return -saved_errno; } =20 - ioc =3D QIO_CHANNEL(qio_channel_socket_new_fd(sv[0], &local_err)); - if (!ioc) { + u->backend_sioc =3D qio_channel_socket_new_fd(sv[0], &local_err); + if (!u->backend_sioc) { error_report_err(local_err); return -ECONNREFUSED; } - u->backend_ioc =3D ioc; - u->backend_src =3D qio_channel_add_watch_source(u->backend_ioc, - G_IO_IN | G_IO_HUP, - backend_read, dev, NULL, N= ULL); + u->backend_src =3D qio_channel_add_watch_source(QIO_CHANNEL(u->backend= _sioc), + G_IO_IN | G_IO_HUP, + backend_read, dev, + NULL, NULL); =20 if (reply_supported) { msg.hdr.flags |=3D VHOST_USER_NEED_REPLY_MASK; @@ -2344,7 +2343,7 @@ static int vhost_user_backend_cleanup(struct vhost_de= v *dev) close(u->postcopy_fd.fd); u->postcopy_fd.handler =3D NULL; } - if (u->backend_ioc) { + if (u->backend_sioc) { close_backend_channel(u); } g_free(u->region_rb); --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848817; cv=none; d=zohomail.com; s=zohoarc; b=ZGcCy4vn25ahnuJTgJCFs1Hh2RJtLl44VwWpmWEUseCyTlP5dv2YMt124JeIL1YAd2Pp18ivYiBoboobcOwaiGkFCWL/tnw1R3btYQHYatjvvTeBpQvVoNgqDAq33AeG8ibdxbY+fscvs8tCuSL35s5HRVTIdeI3na7tjrqpcjQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848817; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=+/XFljqJqxyCr23SXmMT7TFLKh2cfe03+ACmDCJee98=; b=PygWnaWIaGLD8bPqDPM1gn2P9Gvq7s5/xxiZ+ySGbxuuGgYua7fE5j8G+ZIA35KfPKKo3ZOb92lRdQ23tQcNdOu05PJ8GqA0OV7Wztx1N7GjPHqqta7SZ8rt/tdWkGhfz0HbedrV89IVWNK1AwXJtSiD2qkz/lfPt2W/+dF5dC0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848817042829.8815798361043; Mon, 19 Jan 2026 10:53:37 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNG-0006eO-7q; Mon, 19 Jan 2026 13:53:14 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN0-0006IN-7H for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:59 -0500 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMx-0005sZ-D9 for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:57 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 651A280763; Mon, 19 Jan 2026 21:52:53 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-L9wrIHxr; Mon, 19 Jan 2026 21:52:52 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848772; bh=+/XFljqJqxyCr23SXmMT7TFLKh2cfe03+ACmDCJee98=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=Z4L2ykwxfnWwV7PLR/CFVrM6cgn7u4Fs38XImv8NqzlNaQtZ+op2174AX+N6yfqMk ihs9H+U6ybpRzlChLzs92itrqXF3CKRiVNEMbHbQ+P1juT3vLr6yfK9nBYHNbwQoxv xBM74v7+75FmBk/yjPgJEJa0wDs+y6OPv9mQz3Fg= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru Subject: [PATCH v4 11/23] vhost: vhost_virtqueue_start(): fix failure path Date: Mon, 19 Jan 2026 21:52:15 +0300 Message-ID: <20260119185228.203296-12-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848821396154100 Content-Type: text/plain; charset="utf-8" We miss call to unmap in cases when vhost_memory_map() returns lenght less than requested (still we consider such cases as an error). Let's fix it in vhost_memory_map(). Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Raphael Norwitz --- hw/virtio/vhost.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 40440c6d68..1ef9b3ed6c 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -454,11 +454,20 @@ static inline void vhost_dev_log_resize(struct vhost_= dev *dev, uint64_t size) } =20 static void *vhost_memory_map(struct vhost_dev *dev, hwaddr addr, - hwaddr *plen, bool is_write) + hwaddr len, bool is_write) { if (!vhost_dev_has_iommu(dev)) { - return address_space_map(dev->vdev->dma_as, addr, plen, is_write, - MEMTXATTRS_UNSPECIFIED); + hwaddr mapped_len =3D len; + void *res =3D address_space_map(dev->vdev->dma_as, addr, &mapped_l= en, + is_write, MEMTXATTRS_UNSPECIFIED); + if (!res) { + return NULL; + } + if (len !=3D mapped_len) { + address_space_unmap(dev->vdev->dma_as, res, mapped_len, 0, 0); + return NULL; + } + return res; } else { return (void *)(uintptr_t)addr; } @@ -1312,22 +1321,22 @@ int vhost_virtqueue_start(struct vhost_dev *dev, } =20 l =3D vq->desc_size; - vq->desc =3D vhost_memory_map(dev, vq->desc_phys, &l, false); - if (!vq->desc || l !=3D vq->desc_size) { + vq->desc =3D vhost_memory_map(dev, vq->desc_phys, l, false); + if (!vq->desc) { r =3D -ENOMEM; goto fail_alloc_desc; } =20 l =3D vq->avail_size; - vq->avail =3D vhost_memory_map(dev, vq->avail_phys, &l, false); - if (!vq->avail || l !=3D vq->avail_size) { + vq->avail =3D vhost_memory_map(dev, vq->avail_phys, l, false); + if (!vq->avail) { r =3D -ENOMEM; goto fail_alloc_avail; } =20 l =3D vq->used_size; - vq->used =3D vhost_memory_map(dev, vq->used_phys, &l, true); - if (!vq->used || l !=3D vq->used_size) { + vq->used =3D vhost_memory_map(dev, vq->used_phys, l, true); + if (!vq->used) { r =3D -ENOMEM; goto fail_alloc_used; } --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848892; cv=none; d=zohomail.com; s=zohoarc; b=N61gSIk8BSjV56j4e2IiCPUMr7l/JtCa2j8+KyF+i3ASExIvYru9snecSLNEI9Dm1O06uyBjTDA0OnKQmnWY83axk2WBWxp1MF30aor3CQMnCbEZwbcS31t9DY1WbCbKEp/h+BfWx0OIEUc+ap2RU7hU7oihqpKieh2S6u2MkUo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848892; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=rCiioBnnWbMi4a0Cp3Ty2I/qaYF7GYfNwpKaJC9w4mE=; b=eV+LwmcPS8+Y57RgrNtCszuZSu/JGI4kEqwmdEw2WWcZJSscRegj9sLJui3cmKF8htUtbkl29/8yH8UwLDSbhxfG4ljUj6IfQPMvQRs66n9eG9jq8SH/AuoBJM3SAIgmpv5J0pk4NJ0+AklCZy/OWfQ3fR1B46K66RTqFcspET8= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848892046920.8845239957309; Mon, 19 Jan 2026 10:54:52 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNG-0006eg-BY; Mon, 19 Jan 2026 13:53:15 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN0-0006IP-Es for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:59 -0500 Received: from forwardcorp1a.mail.yandex.net ([2a02:6b8:c0e:500:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMx-0005sq-D6 for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:58 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id 240EDC04E0; Mon, 19 Jan 2026 21:52:54 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-dFIw8j8e; Mon, 19 Jan 2026 21:52:53 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848773; bh=rCiioBnnWbMi4a0Cp3Ty2I/qaYF7GYfNwpKaJC9w4mE=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=ORV1opxJ2HVyE7RqQl/tcM+GrABbfgfIbDU+cdOuFTMWcGr9IYY3EADIHeEhyuKw+ QBS9xZ3koX+NQsGfOfaqVXWOfxolHHkcOF56L0SyQZoQ5g53N4RgeSDzB4gkrM+v+h kPvDxFOOm6hEdYBtezzgbUBH9dR/Sq7SL+1q5uag= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 12/23] vhost: make vhost_memory_unmap() null-safe Date: Mon, 19 Jan 2026 21:52:16 +0300 Message-ID: <20260119185228.203296-13-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c0e:500:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848894824158500 Content-Type: text/plain; charset="utf-8" This helps to simplify failure paths of vhost_virtqueue_start() a lot. We also need to zero-out pointers on unmap, to not try to unmap invalid pointers. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- hw/virtio/vhost.c | 41 +++++++++++++++++++++-------------------- 1 file changed, 21 insertions(+), 20 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 1ef9b3ed6c..036c28dead 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -473,14 +473,20 @@ static void *vhost_memory_map(struct vhost_dev *dev, = hwaddr addr, } } =20 -static void vhost_memory_unmap(struct vhost_dev *dev, void *buffer, +static void vhost_memory_unmap(struct vhost_dev *dev, void **buffer, hwaddr len, int is_write, hwaddr access_len) { + if (!*buffer) { + return; + } + if (!vhost_dev_has_iommu(dev)) { - address_space_unmap(dev->vdev->dma_as, buffer, len, is_write, + address_space_unmap(dev->vdev->dma_as, *buffer, len, is_write, access_len); } + + *buffer =3D NULL; } =20 static int vhost_verify_ring_part_mapping(void *ring_hva, @@ -1324,33 +1330,33 @@ int vhost_virtqueue_start(struct vhost_dev *dev, vq->desc =3D vhost_memory_map(dev, vq->desc_phys, l, false); if (!vq->desc) { r =3D -ENOMEM; - goto fail_alloc_desc; + goto fail; } =20 l =3D vq->avail_size; vq->avail =3D vhost_memory_map(dev, vq->avail_phys, l, false); if (!vq->avail) { r =3D -ENOMEM; - goto fail_alloc_avail; + goto fail; } =20 l =3D vq->used_size; vq->used =3D vhost_memory_map(dev, vq->used_phys, l, true); if (!vq->used) { r =3D -ENOMEM; - goto fail_alloc_used; + goto fail; } =20 r =3D vhost_virtqueue_set_addr(dev, vq, vhost_vq_index, dev->log_enabl= ed); if (r < 0) { - goto fail_alloc; + goto fail; } =20 file.fd =3D event_notifier_get_fd(virtio_queue_get_host_notifier(vvq)); r =3D dev->vhost_ops->vhost_set_vring_kick(dev, &file); if (r) { VHOST_OPS_DEBUG(r, "vhost_set_vring_kick failed"); - goto fail_kick; + goto fail; } =20 /* Clear and discard previous events if any. */ @@ -1370,24 +1376,19 @@ int vhost_virtqueue_start(struct vhost_dev *dev, file.fd =3D -1; r =3D dev->vhost_ops->vhost_set_vring_call(dev, &file); if (r) { - goto fail_vector; + goto fail; } } =20 return 0; =20 -fail_vector: -fail_kick: -fail_alloc: - vhost_memory_unmap(dev, vq->used, virtio_queue_get_used_size(vdev, idx= ), +fail: + vhost_memory_unmap(dev, &vq->used, virtio_queue_get_used_size(vdev, id= x), 0, 0); -fail_alloc_used: - vhost_memory_unmap(dev, vq->avail, virtio_queue_get_avail_size(vdev, i= dx), + vhost_memory_unmap(dev, &vq->avail, virtio_queue_get_avail_size(vdev, = idx), 0, 0); -fail_alloc_avail: - vhost_memory_unmap(dev, vq->desc, virtio_queue_get_desc_size(vdev, idx= ), + vhost_memory_unmap(dev, &vq->desc, virtio_queue_get_desc_size(vdev, id= x), 0, 0); -fail_alloc_desc: return r; } =20 @@ -1434,11 +1435,11 @@ static int do_vhost_virtqueue_stop(struct vhost_dev= *dev, vhost_vq_index); } =20 - vhost_memory_unmap(dev, vq->used, virtio_queue_get_used_size(vdev, idx= ), + vhost_memory_unmap(dev, &vq->used, virtio_queue_get_used_size(vdev, id= x), 1, virtio_queue_get_used_size(vdev, idx)); - vhost_memory_unmap(dev, vq->avail, virtio_queue_get_avail_size(vdev, i= dx), + vhost_memory_unmap(dev, &vq->avail, virtio_queue_get_avail_size(vdev, = idx), 0, virtio_queue_get_avail_size(vdev, idx)); - vhost_memory_unmap(dev, vq->desc, virtio_queue_get_desc_size(vdev, idx= ), + vhost_memory_unmap(dev, &vq->desc, virtio_queue_get_desc_size(vdev, id= x), 0, virtio_queue_get_desc_size(vdev, idx)); return r; } --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848903; cv=none; d=zohomail.com; s=zohoarc; b=SRIEdPhgTqFVWHjcZxfVt9U0i8dsu9ek6OflfBB5EqxaxbHqCYqi6ksZkFWOsowSkK64zwM72SFiXTaDAhfTmygIelZWqN9l4bFMLtwOtkf51HTn5jluxKCVArv/AJLlZV484y8Bcc2iXIgFIwXnwO/Sz0pVKB+zhHsoupl39Qs= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848903; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=6HvjYsoZhaC2LSg0jkVYcNTta/Ms24XTnZFLI2Nij9E=; b=XxtCpxxrzMfdL/UywGZY7fKAutKtJNaOinL8mpoD9w7gY8ZZoqFqVPGdYxdfK9v1DClcxA+ysCB9iF09VtUYJJi0GajGMV/01jA4YRvSkRUjcJi+C61LHnoY9yrYtVktzOGbUamcprkV2apsj73CINwDhdoL6jtRPjhnJhi2M/o= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848903574485.55869064215585; Mon, 19 Jan 2026 10:55:03 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNG-0006bA-0o; Mon, 19 Jan 2026 13:53:14 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN1-0006KL-J5 for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from forwardcorp1b.mail.yandex.net ([2a02:6b8:c02:900:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMy-0005sx-3J for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:59 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id CD5AF80870; Mon, 19 Jan 2026 21:52:54 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-GC5XU5CZ; Mon, 19 Jan 2026 21:52:54 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848774; bh=6HvjYsoZhaC2LSg0jkVYcNTta/Ms24XTnZFLI2Nij9E=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=e9CteKYDxJpIIphIdjpDyZ3Z7hCo5OM46059FWanmha0LyAODS9XuozHNw1ibIXy3 N6dPqVoBpaawxAVdYkkSQDuPFZATiZo8RqdV0/Z++UkIl1lSZVjWWIbPCiJFFftnzB W1aqm1vExvI4yqTW67asAHVkblpGhcqOWOPe07Zc= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 13/23] vhost: simplify calls to vhost_memory_unmap() Date: Mon, 19 Jan 2026 21:52:17 +0300 Message-ID: <20260119185228.203296-14-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848906773154100 Content-Type: text/plain; charset="utf-8" No reason to calculate memory size again, as we have corresponding variable for each vring. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- hw/virtio/vhost.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 036c28dead..84937c8a67 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1383,12 +1383,9 @@ int vhost_virtqueue_start(struct vhost_dev *dev, return 0; =20 fail: - vhost_memory_unmap(dev, &vq->used, virtio_queue_get_used_size(vdev, id= x), - 0, 0); - vhost_memory_unmap(dev, &vq->avail, virtio_queue_get_avail_size(vdev, = idx), - 0, 0); - vhost_memory_unmap(dev, &vq->desc, virtio_queue_get_desc_size(vdev, id= x), - 0, 0); + vhost_memory_unmap(dev, &vq->used, vq->used_size, 0, 0); + vhost_memory_unmap(dev, &vq->avail, vq->avail_size, 0, 0); + vhost_memory_unmap(dev, &vq->desc, vq->desc_size, 0, 0); return r; } =20 @@ -1435,12 +1432,9 @@ static int do_vhost_virtqueue_stop(struct vhost_dev = *dev, vhost_vq_index); } =20 - vhost_memory_unmap(dev, &vq->used, virtio_queue_get_used_size(vdev, id= x), - 1, virtio_queue_get_used_size(vdev, idx)); - vhost_memory_unmap(dev, &vq->avail, virtio_queue_get_avail_size(vdev, = idx), - 0, virtio_queue_get_avail_size(vdev, idx)); - vhost_memory_unmap(dev, &vq->desc, virtio_queue_get_desc_size(vdev, id= x), - 0, virtio_queue_get_desc_size(vdev, idx)); + vhost_memory_unmap(dev, &vq->used, vq->used_size, 1, vq->used_size); + vhost_memory_unmap(dev, &vq->avail, vq->avail_size, 0, vq->avail_size); + vhost_memory_unmap(dev, &vq->desc, vq->desc_size, 0, vq->desc_size); return r; } =20 --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848960; cv=none; d=zohomail.com; s=zohoarc; b=BHcoxA8qXij79KuxVXIhjoZHNFg2nA9UUxSpv2T+ovClB56076B2hS82kKV29Lt53MDNDqyELor/tcOi4RgUXHUkYy9/ZIRQJuQFJCXZxDEeSEOFSUiQVDUz3OxK1usW6LREetANiUYKWF6qhTpVyUhkncWHAHoBF6qcNsfpSP8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848960; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=yy92i/R/x+g2ibDhvt5IEKEUExQYMCC8wTFRtov/6oU=; b=jwh4ekSZZDefG31isSDwq0lXCkLNJvcwgt6mqmX1t6Vju1vBVc/dw5Ar5/kOvjcnffeW/9jRHyE7QqnyuPwVJ+QBr/nnRdR8n4Y+YpfU1ps4c/hW1Eu65tWgS7885dEvf3wIZZIM3TXMMwwyHz52rQnRTxD9ddNrVyd0ns3iD2k= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848960278346.7815628161694; Mon, 19 Jan 2026 10:56:00 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNL-0006is-CA; Mon, 19 Jan 2026 13:53:19 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN1-0006KM-KD for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from forwardcorp1d.mail.yandex.net ([178.154.239.200]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMy-0005tE-Qq for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:59 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 8E4D6804AA; Mon, 19 Jan 2026 21:52:55 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-6NWd5nzR; Mon, 19 Jan 2026 21:52:55 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848775; bh=yy92i/R/x+g2ibDhvt5IEKEUExQYMCC8wTFRtov/6oU=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=yxXpTq2UgLHi17n7ZKvHgsZZbnnJomaNoEANHj1HL7nfm3Z1PrE3+xK9tXVQ8KW0o gCGQQ5ZyEzx9sTmfU0BmSZfDPhLA0+dF+tlw2xYT1DH+Fq3WaWVLiyhYUtn1kQKZOC WhilpBg0DRRFMwt0QZvqd5YJc+flsIMve8SCwQi0= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 14/23] vhost: move vrings mapping to the top of vhost_virtqueue_start() Date: Mon, 19 Jan 2026 21:52:18 +0300 Message-ID: <20260119185228.203296-15-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.200; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848962678158500 Content-Type: text/plain; charset="utf-8" This simplifies further refactoring and final introduction of vhost backend live migration. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Raphael Norwitz Reviewed-by: Daniil Tatianin --- hw/virtio/vhost.c | 46 +++++++++++++++++++++++----------------------- 1 file changed, 23 insertions(+), 23 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 84937c8a67..06b0b34cd3 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1303,29 +1303,6 @@ int vhost_virtqueue_start(struct vhost_dev *dev, return 0; } =20 - vq->num =3D state.num =3D virtio_queue_get_num(vdev, idx); - r =3D dev->vhost_ops->vhost_set_vring_num(dev, &state); - if (r) { - VHOST_OPS_DEBUG(r, "vhost_set_vring_num failed"); - return r; - } - - state.num =3D virtio_queue_get_last_avail_idx(vdev, idx); - r =3D dev->vhost_ops->vhost_set_vring_base(dev, &state); - if (r) { - VHOST_OPS_DEBUG(r, "vhost_set_vring_base failed"); - return r; - } - - if (vhost_needs_vring_endian(vdev)) { - r =3D vhost_virtqueue_set_vring_endian_legacy(dev, - virtio_is_big_endian(v= dev), - vhost_vq_index); - if (r) { - return r; - } - } - l =3D vq->desc_size; vq->desc =3D vhost_memory_map(dev, vq->desc_phys, l, false); if (!vq->desc) { @@ -1347,6 +1324,29 @@ int vhost_virtqueue_start(struct vhost_dev *dev, goto fail; } =20 + vq->num =3D state.num =3D virtio_queue_get_num(vdev, idx); + r =3D dev->vhost_ops->vhost_set_vring_num(dev, &state); + if (r) { + VHOST_OPS_DEBUG(r, "vhost_set_vring_num failed"); + goto fail; + } + + state.num =3D virtio_queue_get_last_avail_idx(vdev, idx); + r =3D dev->vhost_ops->vhost_set_vring_base(dev, &state); + if (r) { + VHOST_OPS_DEBUG(r, "vhost_set_vring_base failed"); + goto fail; + } + + if (vhost_needs_vring_endian(vdev)) { + r =3D vhost_virtqueue_set_vring_endian_legacy(dev, + virtio_is_big_endian(v= dev), + vhost_vq_index); + if (r) { + goto fail; + } + } + r =3D vhost_virtqueue_set_addr(dev, vq, vhost_vq_index, dev->log_enabl= ed); if (r < 0) { goto fail; --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848897; cv=none; d=zohomail.com; s=zohoarc; b=d/5n61a8Cw5CRfmSNAXhzZZqGz28ApS3HmEGMLB+ZR909/wrNodbMBP8g/necwUfdQ69y8A/VOiWdC+o9bPP+4otG2HxNIhbZxzuCzc1awD8Nkheea4AvCRJZ6ptjugKCzCbqEqvdZlqucz9FHjgVXpdO6Un6BwCgfVLDwthyUI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848897; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=NH3Nk6dA3QPb24B1uzxLO8gXbhQ1VwUsS/qFCVxxOvs=; b=jI0AhWAoTehUbqkuPbi6hnJXTxgoQnsyiBge68Dm5TMTn5wy+AHI5BX8h5msrAOvA4Stcs7ig0Lz8rawwFGz2FRG5UdMOAu3qCVS7WOFpHIsPSTQtW9nH2YA2lucYrFU47bueZq+ILfItvpbaUpUH0q92v9OMan5Nr+H0wkM6sA= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848897004384.4760276644686; Mon, 19 Jan 2026 10:54:57 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNT-00075e-1c; Mon, 19 Jan 2026 13:53:27 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN1-0006KP-NQ for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from forwardcorp1b.mail.yandex.net ([2a02:6b8:c02:900:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuMz-0005tR-Vp for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:52:59 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 48C098862E; Mon, 19 Jan 2026 21:52:56 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-hQJJEiTC; Mon, 19 Jan 2026 21:52:55 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848775; bh=NH3Nk6dA3QPb24B1uzxLO8gXbhQ1VwUsS/qFCVxxOvs=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=PBW1xghmY5vcAjjCxe2ERw2FZTCWiEMj7+/eWNwfQLpK71wRgrF1Ltm4TWGyV6kNz 6VrkBsmA9q/jUOfuZOkv5AjpeC+1SgpONickrSZlkjXIUjp6rVkX1mRcAKd43vQpCP cfWyg1LA5kKbeW2gx41MrZp9b43T1UM3pPtTfkQ8= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru Subject: [PATCH v4 15/23] vhost: vhost_virtqueue_start(): drop extra local variables Date: Mon, 19 Jan 2026 21:52:19 +0300 Message-ID: <20260119185228.203296-16-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848898664154100 Content-Type: text/plain; charset="utf-8" One letter named variables doesn't really help to read the code, and they simply duplicate structure fields. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Raphael Norwitz --- hw/virtio/vhost.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 06b0b34cd3..653cb706cc 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1277,7 +1277,6 @@ int vhost_virtqueue_start(struct vhost_dev *dev, BusState *qbus =3D BUS(qdev_get_parent_bus(DEVICE(vdev))); VirtioBusState *vbus =3D VIRTIO_BUS(qbus); VirtioBusClass *k =3D VIRTIO_BUS_GET_CLASS(vbus); - hwaddr l; int r; int vhost_vq_index =3D dev->vhost_ops->vhost_get_vq_index(dev, idx); struct vhost_vring_file file =3D { @@ -1302,23 +1301,17 @@ int vhost_virtqueue_start(struct vhost_dev *dev, /* Queue might not be ready for start */ return 0; } - - l =3D vq->desc_size; - vq->desc =3D vhost_memory_map(dev, vq->desc_phys, l, false); + vq->desc =3D vhost_memory_map(dev, vq->desc_phys, vq->desc_size, false= ); if (!vq->desc) { r =3D -ENOMEM; goto fail; } - - l =3D vq->avail_size; - vq->avail =3D vhost_memory_map(dev, vq->avail_phys, l, false); + vq->avail =3D vhost_memory_map(dev, vq->avail_phys, vq->avail_size, fa= lse); if (!vq->avail) { r =3D -ENOMEM; goto fail; } - - l =3D vq->used_size; - vq->used =3D vhost_memory_map(dev, vq->used_phys, l, true); + vq->used =3D vhost_memory_map(dev, vq->used_phys, vq->used_size, true); if (!vq->used) { r =3D -ENOMEM; goto fail; --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848865; cv=none; d=zohomail.com; s=zohoarc; b=MGwUR6EE2riX1S6aWpIidw1/LES7zEjMuDkssLZe4/d/DVFQDkKvfXhlaMbGeAwKddIYiIAzO6DVikJZ31i6H+TXpLz9tiaN7bpwkTakJWgtJhHdRa8/aNzNWi5Py3D1FFbQ2qrM9aw5xhTSty0e5YHSadq0YciJbx3VXEQ0oqA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848865; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=xvEQ//6kyBg0qf2oNsfAS8mNhDRGeBvSk08XUDTkKmo=; b=CR2AHpTS0ug87Cj77Ci7L31VeqhEQfQbvyBQsrZG56JKoeEAsX4cBsa7PI6EhqKSAo8XRtVXR0TM0BOP0Ne/jtu2oATZ325PMo2oEi/USo3x9aU0iDHPDA/SNtm4hKnsoij4JHTC5+H8T5PtlqNZApjqY8cmPrR6QgdzPTwmL3M= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848864621978.16561902581; Mon, 19 Jan 2026 10:54:24 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNU-00077j-8Q; Mon, 19 Jan 2026 13:53:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN2-0006KV-KU for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN0-0005ti-9f for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:00 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 02F8780762; Mon, 19 Jan 2026 21:52:57 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-2z6XDdr4; Mon, 19 Jan 2026 21:52:56 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848776; bh=xvEQ//6kyBg0qf2oNsfAS8mNhDRGeBvSk08XUDTkKmo=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=b1LLP6bTJmjvyv3F4TgsQdWEx011HAbe1z0U5isH4FxhQg3gfYMeZztwmO8jsDYTZ Fv9ki8PdeeuOdaMcO7HMIDimEH2Zg/+2F/Qhpa891C6/wE1gFwr/pWI7DdkmBltSFO ugWPS33Dmz6egY88xObdFuJOgQRsvCfwYPKlioD8= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru Subject: [PATCH v4 16/23] vhost: final refactoring of vhost vrings map/unmap Date: Mon, 19 Jan 2026 21:52:20 +0300 Message-ID: <20260119185228.203296-17-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848879301158500 Content-Type: text/plain; charset="utf-8" Introduce helper functions vhost_vrings_map() and vhost_vrings_unmap() and use them. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Raphael Norwitz --- hw/virtio/vhost.c | 89 +++++++++++++++++++++++++++++------------------ 1 file changed, 55 insertions(+), 34 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 653cb706cc..7efdc4643d 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -489,6 +489,56 @@ static void vhost_memory_unmap(struct vhost_dev *dev, = void **buffer, *buffer =3D NULL; } =20 +static void vhost_vrings_unmap(struct vhost_dev *dev, + struct vhost_virtqueue *vq, bool touched) +{ + vhost_memory_unmap(dev, &vq->used, vq->used_size, touched, + touched ? vq->used_size : 0); + vhost_memory_unmap(dev, &vq->avail, vq->avail_size, 0, + touched ? vq->avail_size : 0); + vhost_memory_unmap(dev, &vq->desc, vq->desc_size, 0, + touched ? vq->desc_size : 0); +} + +static int vhost_vrings_map(struct vhost_dev *dev, + struct VirtIODevice *vdev, + struct vhost_virtqueue *vq, + unsigned idx) +{ + vq->desc_size =3D virtio_queue_get_desc_size(vdev, idx); + vq->desc_phys =3D virtio_queue_get_desc_addr(vdev, idx); + vq->desc =3D NULL; + vq->avail_size =3D virtio_queue_get_avail_size(vdev, idx); + vq->avail_phys =3D virtio_queue_get_avail_addr(vdev, idx); + vq->avail =3D NULL; + vq->used_size =3D virtio_queue_get_used_size(vdev, idx); + vq->used_phys =3D virtio_queue_get_used_addr(vdev, idx); + vq->used =3D NULL; + + if (vq->desc_phys =3D=3D 0) { + /* Queue might not be ready for start */ + return 0; + } + vq->desc =3D vhost_memory_map(dev, vq->desc_phys, vq->desc_size, false= ); + if (!vq->desc) { + goto fail; + } + vq->avail =3D vhost_memory_map(dev, vq->avail_phys, vq->avail_size, fa= lse); + if (!vq->avail) { + goto fail; + } + vq->used =3D vhost_memory_map(dev, vq->used_phys, vq->used_size, true); + if (!vq->used) { + goto fail; + } + + return 1; + +fail: + vhost_vrings_unmap(dev, vq, false); + return -ENOMEM; +} + static int vhost_verify_ring_part_mapping(void *ring_hva, uint64_t ring_gpa, uint64_t ring_size, @@ -1287,34 +1337,9 @@ int vhost_virtqueue_start(struct vhost_dev *dev, }; struct VirtQueue *vvq =3D virtio_get_queue(vdev, idx); =20 - vq->desc_size =3D virtio_queue_get_desc_size(vdev, idx); - vq->desc_phys =3D virtio_queue_get_desc_addr(vdev, idx); - vq->desc =3D NULL; - vq->avail_size =3D virtio_queue_get_avail_size(vdev, idx); - vq->avail_phys =3D virtio_queue_get_avail_addr(vdev, idx); - vq->avail =3D NULL; - vq->used_size =3D virtio_queue_get_used_size(vdev, idx); - vq->used_phys =3D virtio_queue_get_used_addr(vdev, idx); - vq->used =3D NULL; - - if (vq->desc_phys =3D=3D 0) { - /* Queue might not be ready for start */ - return 0; - } - vq->desc =3D vhost_memory_map(dev, vq->desc_phys, vq->desc_size, false= ); - if (!vq->desc) { - r =3D -ENOMEM; - goto fail; - } - vq->avail =3D vhost_memory_map(dev, vq->avail_phys, vq->avail_size, fa= lse); - if (!vq->avail) { - r =3D -ENOMEM; - goto fail; - } - vq->used =3D vhost_memory_map(dev, vq->used_phys, vq->used_size, true); - if (!vq->used) { - r =3D -ENOMEM; - goto fail; + r =3D vhost_vrings_map(dev, vdev, vq, idx); + if (r <=3D 0) { + return r; } =20 vq->num =3D state.num =3D virtio_queue_get_num(vdev, idx); @@ -1376,9 +1401,7 @@ int vhost_virtqueue_start(struct vhost_dev *dev, return 0; =20 fail: - vhost_memory_unmap(dev, &vq->used, vq->used_size, 0, 0); - vhost_memory_unmap(dev, &vq->avail, vq->avail_size, 0, 0); - vhost_memory_unmap(dev, &vq->desc, vq->desc_size, 0, 0); + vhost_vrings_unmap(dev, vq, false); return r; } =20 @@ -1425,9 +1448,7 @@ static int do_vhost_virtqueue_stop(struct vhost_dev *= dev, vhost_vq_index); } =20 - vhost_memory_unmap(dev, &vq->used, vq->used_size, 1, vq->used_size); - vhost_memory_unmap(dev, &vq->avail, vq->avail_size, 0, vq->avail_size); - vhost_memory_unmap(dev, &vq->desc, vq->desc_size, 0, vq->desc_size); + vhost_vrings_unmap(dev, vq, true); return r; } =20 --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848921; cv=none; d=zohomail.com; s=zohoarc; b=hO0j9oJEgrx204Q5tj5bE2r45q46iKUyC1UZThFX74q2jfDoya79n+CllvM3GqQWKQwrDPuJspPNHwh/9l12HKMZdrTiDG5vGXNymRyx9y2Ci+ps5orteJ+o6TPKC7x5ldtJDbxE/2Dzk2XGa6Lc7uNB+wstJfyByzhoMoBHe5s= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848921; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=pPhptMC/ns/zstRN0CmUZAxzpqQHrHM1w7CB4RzM8S4=; b=aByWUc3DuU++ffr+uOTzdUZ/W77PgmW1kKWLuwoWK5kL5BGmEGTqvU8SLvziAejrfQTyheBSydT11jppw9XduqLpYM7pEqMA3K7aM+ktVeUhlbNmqA++jNAaUs3LoFiC8tEMncz5OMyri9j9cyRWa7ToK9vHKazMz360aH5i0iU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848921891561.7148061966101; Mon, 19 Jan 2026 10:55:21 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNP-0006t8-H6; Mon, 19 Jan 2026 13:53:24 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN2-0006KW-Nd for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN0-0005u9-WF for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:00 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id AA5778076E; Mon, 19 Jan 2026 21:52:57 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-CiWFGwtZ; Mon, 19 Jan 2026 21:52:57 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848777; bh=pPhptMC/ns/zstRN0CmUZAxzpqQHrHM1w7CB4RzM8S4=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=W6qVRJeWdreVPGQzrN4GPyGhooBibBXkSQLYSP0jUWv0vtDRgjgGl2nqrYwNCUHMJ 7V3Mt6iWGEuZXggL5ZBdkF7vgJs/1qM5vjsG2kVUI8XmcAV4UA6R+KlcFoFN59vfsz 7fm/Yc++7fn6QjxPIP1KV1XeJvcw/liLlr6xGnd8= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 17/23] vhost: simplify vhost_dev_init() error-path Date: Mon, 19 Jan 2026 21:52:21 +0300 Message-ID: <20260119185228.203296-18-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848923047154100 Content-Type: text/plain; charset="utf-8" No reason to rollback setting up busyloop timeout on failure. We don't do such rollback for other things we setup in backend. Also, look at vhost_net_init() in hw/net/vhost_net.c: we may fail after successfully called vhost_dev_init(), and in this case we'll just call vhost_dev_cleanup(), which doesn't rollback busyloop timeout. So, let's keep it simple. Signed-off-by: Vladimir Sementsov-Ogievskiy Acked-by: Raphael Norwitz Reviewed-by: Daniil Tatianin --- hw/virtio/vhost.c | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 7efdc4643d..412bbd9063 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1625,7 +1625,7 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, busyloop_timeout); if (r < 0) { error_setg_errno(errp, -r, "Failed to set busyloop timeout= "); - goto fail_busyloop; + goto fail; } } } @@ -1665,7 +1665,7 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, if (hdev->migration_blocker !=3D NULL) { r =3D migrate_add_blocker_normal(&hdev->migration_blocker, errp); if (r < 0) { - goto fail_busyloop; + goto fail; } } =20 @@ -1697,17 +1697,11 @@ int vhost_dev_init(struct vhost_dev *hdev, void *op= aque, " than current number of used (%d) and reserved (%d)" " memory slots for memory devices.", limit, used, reser= ved); r =3D -EINVAL; - goto fail_busyloop; + goto fail; } =20 return 0; =20 -fail_busyloop: - if (busyloop_timeout) { - while (--i >=3D 0) { - vhost_virtqueue_set_busyloop_timeout(hdev, hdev->vq_index + i,= 0); - } - } fail: hdev->nvqs =3D n_initialized_vqs; vhost_dev_cleanup(hdev); --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848891; cv=none; d=zohomail.com; s=zohoarc; b=EQdykHqz/LBeFDv4h1xugjZf17a4TFN6Ft2VkT92Vdeqg9NOPp1uyGP5t7gAfi6QhT38Ro5Q3dORYq1weFwHgqxaLag5eMU63O3tJgrDZ9JB7r2aBwDzU+9xMexImcpeIduNvtJUBvrVOui8s0t0jPx2N5o0unH4s3XLwfZHnzM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848891; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=lLXxusRw2YZVf5A40u70o3SKR8jxXl1iK3azs8RLRWQ=; b=FY+pbSxjigtNGL3jY1IrtG0P4KXnd/lKs5Vba0myT7xPbvdxYVaI6fwyaEDcqkbwfd/yEVsBOuqmaq4xXy3IM5wOmJz8mRtMm9mYeB2brsf3SKGmDc9mq5+DSyR0hD0BUhw5Qn44lr1AdUOt68vuPbmsIpT5vBcXFGt7equvZjE= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848891266257.34584774908853; Mon, 19 Jan 2026 10:54:51 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNR-00071X-QZ; Mon, 19 Jan 2026 13:53:25 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN3-0006Km-BP for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from forwardcorp1b.mail.yandex.net ([2a02:6b8:c02:900:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN1-0005uV-Na for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 64CC98863C; Mon, 19 Jan 2026 21:52:58 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-JHmy9Ipu; Mon, 19 Jan 2026 21:52:57 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848777; bh=lLXxusRw2YZVf5A40u70o3SKR8jxXl1iK3azs8RLRWQ=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=yX8qGZ3bMjs3kCw0obZq1JH8NSo1usY0DiV+x++swBA3HGMEOVBthttLmvICHD6XU fIN7wSCXztj9Ox8rkxfctvA8Ks1gMa3QE0SXm8tb3BNjqTfyNpRc1ew8bq/87dvu69 njGj4QB0KIDWmVRyIp1gmyo+UuT98G9GjwqJxcyc= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 18/23] vhost: move busyloop timeout initialization to vhost_virtqueue_init() Date: Mon, 19 Jan 2026 21:52:22 +0300 Message-ID: <20260119185228.203296-19-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848895224154100 Content-Type: text/plain; charset="utf-8" Let's all per-virtqueue initializations be in one place. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Raphael Norwitz Reviewed-by: Daniil Tatianin --- hw/virtio/vhost.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 412bbd9063..b9f26a4ee8 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1497,7 +1497,8 @@ static void vhost_virtqueue_error_notifier(EventNotif= ier *n) } =20 static int vhost_virtqueue_init(struct vhost_dev *dev, - struct vhost_virtqueue *vq, int n) + struct vhost_virtqueue *vq, int n, + bool busyloop_timeout) { int vhost_vq_index =3D dev->vhost_ops->vhost_get_vq_index(dev, n); struct vhost_vring_file file =3D { @@ -1534,6 +1535,14 @@ static int vhost_virtqueue_init(struct vhost_dev *de= v, vhost_virtqueue_error_notifier); } =20 + if (busyloop_timeout) { + r =3D vhost_virtqueue_set_busyloop_timeout(dev, n, busyloop_timeou= t); + if (r < 0) { + VHOST_OPS_DEBUG(r, "Failed to set busyloop timeout"); + goto fail_err; + } + } + return 0; =20 fail_err: @@ -1612,24 +1621,14 @@ int vhost_dev_init(struct vhost_dev *hdev, void *op= aque, } =20 for (i =3D 0; i < hdev->nvqs; ++i, ++n_initialized_vqs) { - r =3D vhost_virtqueue_init(hdev, hdev->vqs + i, hdev->vq_index + i= ); + r =3D vhost_virtqueue_init(hdev, hdev->vqs + i, hdev->vq_index + i, + busyloop_timeout); if (r < 0) { error_setg_errno(errp, -r, "Failed to initialize virtqueue %d"= , i); goto fail; } } =20 - if (busyloop_timeout) { - for (i =3D 0; i < hdev->nvqs; ++i) { - r =3D vhost_virtqueue_set_busyloop_timeout(hdev, hdev->vq_inde= x + i, - busyloop_timeout); - if (r < 0) { - error_setg_errno(errp, -r, "Failed to set busyloop timeout= "); - goto fail; - } - } - } - virtio_features_copy(hdev->_features_ex, features); =20 hdev->memory_listener =3D (MemoryListener) { --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848927; cv=none; d=zohomail.com; s=zohoarc; b=nHup4FfW/E3Sj62V2a3UO8WS/i1luUGOZRd2l7TJkb+mb7Fx4XhfSkkunNK6+tX31kLf2IQeHcYy2+cdKePe1jzajpVR1gCThPVlmBNYw6NOYnwCVOI/pugqIw3dO591zkYSS/tVW5lJ91gs/LPREUk6qYGEbAKp50AHCemxK5w= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848927; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=E+nk2j9Vw8tQaoGmGSs+VyhHBPWP5Zy1keFCbK64NrA=; b=d/1aj9Hh7TOOsC8kFTkH4ZZzryffVB7SxkxWQFbvZ/8BYeq65oAg0ZZ+Yj6EGRO0s99D6cfm94qPrGx9s7E7IVfDr4FRkTONsWlKl2MQovDkG5o8IUtfGYHyEdfYKDi1rj436Kw2R9GEvWjwUyh8HJ6XXtLu+oxAeMPifLeKxWg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848927592617.6137205599513; Mon, 19 Jan 2026 10:55:27 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNV-00079J-0P; Mon, 19 Jan 2026 13:53:29 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN5-0006Nf-Ec for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:05 -0500 Received: from forwardcorp1d.mail.yandex.net ([2a02:6b8:c41:1300:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN2-0005up-Cf for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:01 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 2151E80760; Mon, 19 Jan 2026 21:52:59 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-TmfdUmKd; Mon, 19 Jan 2026 21:52:58 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848778; bh=E+nk2j9Vw8tQaoGmGSs+VyhHBPWP5Zy1keFCbK64NrA=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=RVs7t1IeGSb4TpRrkCyGUmM22MExm1cuA7Leh0EK13UU0gZHJUsXb5m53MSWnGOnL GYBteonox61xdRjh7B4024q4CotLr4CQrMPe+YW6/iVsSF6nlIXqnRR1JI3ENYjxHk y+bi8QvX0IYuSFnRMUSs/VtDSu17MPgmVS8sAx0s= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 19/23] vhost: vhost_dev_init(): simplify features initialization Date: Mon, 19 Jan 2026 21:52:23 +0300 Message-ID: <20260119185228.203296-20-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c41:1300:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1d.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848930590158500 Content-Type: text/plain; charset="utf-8" Drop extra variable and extra function parameter passing, initialize dev._features directly. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- hw/virtio/vhost.c | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index b9f26a4ee8..ad49b9cc2f 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1561,18 +1561,17 @@ static void vhost_virtqueue_cleanup(struct vhost_vi= rtqueue *vq) } } =20 -static int vhost_dev_get_features(struct vhost_dev *hdev, - uint64_t *features) +static int vhost_dev_init_features(struct vhost_dev *hdev) { uint64_t features64; int r; =20 if (hdev->vhost_ops->vhost_get_features_ex) { - return hdev->vhost_ops->vhost_get_features_ex(hdev, features); + return hdev->vhost_ops->vhost_get_features_ex(hdev, hdev->_feature= s_ex); } =20 r =3D hdev->vhost_ops->vhost_get_features(hdev, &features64); - virtio_features_from_u64(features, features64); + virtio_features_from_u64(hdev->_features_ex, features64); return r; } =20 @@ -1580,7 +1579,6 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, VhostBackendType backend_type, uint32_t busyloop_timeou= t, Error **errp) { - uint64_t features[VIRTIO_FEATURES_NU64S]; unsigned int used, reserved, limit; int i, r, n_initialized_vqs =3D 0; =20 @@ -1601,9 +1599,9 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, goto fail; } =20 - r =3D vhost_dev_get_features(hdev, features); + r =3D vhost_dev_init_features(hdev); if (r < 0) { - error_setg_errno(errp, -r, "vhost_get_features failed"); + error_setg_errno(errp, -r, "vhost_init_features failed"); goto fail; } =20 @@ -1629,8 +1627,6 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, } } =20 - virtio_features_copy(hdev->_features_ex, features); - hdev->memory_listener =3D (MemoryListener) { .name =3D "vhost", .begin =3D vhost_begin, --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848896; cv=none; d=zohomail.com; s=zohoarc; b=S70ul4Fqpu2LC+LCichIPrboklvLAmyXdXOLQqMUY15FRWHOSM57OkaxPlUyhfOl9affaf7J4QWiQLgu/1Yhhlch0eBpxKTfN9Jaab7nQYpa3oEjPIhMO7mtbsltJL8HnPZ0kicFMCT3fiSJlJtMtEg8jT7aCLZ4Ic06HQG3vyk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848896; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=DfUvRKTkCryWIsKI3eAjTQcE5fIDDbhaNHlB0ZIX2No=; b=fLWszDG/RAiC6tK7BnjW8UGCdZ1TBjd+fb94alN1AGAq4C9pU4keKTdJsoDt6DMnVRXITOVudNhxHNb2szIY6iUh+c199hl/mBc/Gyv2uRNtPAlqC9szGyNtXslVbHzorFXubP06woJcSm6Jm2z4sINQMaTblDaHatgusBOYosM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848896560396.63966137808654; Mon, 19 Jan 2026 10:54:56 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNU-00078p-Qu; Mon, 19 Jan 2026 13:53:28 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN7-0006S1-7S for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:09 -0500 Received: from forwardcorp1a.mail.yandex.net ([2a02:6b8:c0e:500:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN3-0005v6-FD for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:04 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id BBE19C04DF; Mon, 19 Jan 2026 21:52:59 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-JEyzCTbs; Mon, 19 Jan 2026 21:52:59 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848779; bh=DfUvRKTkCryWIsKI3eAjTQcE5fIDDbhaNHlB0ZIX2No=; h=Cc:Message-ID:References:Date:In-Reply-To:Subject:To:From; b=FKljBuC4xx07s/EwRtiZyI/+tvWrePELoC14tKgB7fyzSKWOrJTCYv927zBVOL5Q6 Al3pgLAIKpkLwUsNdrWI0q6tf2eJOIpUgy7pcolltlh0j5zTWaKVEZ6SiVGBIqs3dl 3nFzx5nbcqSs0DRFd9PyGAr1z54cMKNge8X2e07k= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Raphael Norwitz Subject: [PATCH v4 20/23] hw/virtio/virtio-bus: refactor virtio_bus_set_host_notifier() Date: Mon, 19 Jan 2026 21:52:24 +0300 Message-ID: <20260119185228.203296-21-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c0e:500:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848898683154100 The logic kept as is. Refactor to simplify further changes. Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Raphael Norwitz Reviewed-by: Daniil Tatianin --- hw/virtio/virtio-bus.c | 18 ++++++++---------- 1 file changed, 8 insertions(+), 10 deletions(-) diff --git a/hw/virtio/virtio-bus.c b/hw/virtio/virtio-bus.c index cef944e015..9b545acda3 100644 --- a/hw/virtio/virtio-bus.c +++ b/hw/virtio/virtio-bus.c @@ -298,20 +298,18 @@ int virtio_bus_set_host_notifier(VirtioBusState *bus,= int n, bool assign) __func__, strerror(-r), r); return r; } - r =3D k->ioeventfd_assign(proxy, notifier, n, true); - if (r < 0) { - error_report("%s: unable to assign ioeventfd: %d", __func__, r= ); - virtio_bus_cleanup_host_notifier(bus, n); - } - } else { - k->ioeventfd_assign(proxy, notifier, n, false); } =20 - if (r =3D=3D 0) { - virtio_queue_set_host_notifier_enabled(vq, assign); + r =3D k->ioeventfd_assign(proxy, notifier, n, assign); + if (r < 0 && assign) { + error_report("%s: unable to assign ioeventfd: %d", __func__, r); + virtio_bus_cleanup_host_notifier(bus, n); + return r; } =20 - return r; + virtio_queue_set_host_notifier_enabled(vq, assign); + + return 0; } =20 void virtio_bus_cleanup_host_notifier(VirtioBusState *bus, int n) --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848948; cv=none; d=zohomail.com; s=zohoarc; b=fA3MB7OZg79ZwJyS/U86J7+nfTP/3giCS5L0u2UHWPT/2BQvAyVV7LNyvJn9SJ3Kux3vcTW4/uzZPgFEnj6ccHtAZcIxi143rwlIDazP5PQEpUVYhvf2RGO6sY88sGcyDxYjtb9g9IMd30Y71TJ4vuzMlqSGaBouUe4LBBjK12M= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848948; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=hSTrhzL2uKvELxftMkpgBDziCiLU8CYjWT2j2MxrYkA=; b=nVOttjrUqTt/aF9FA39Z33LuOU9C0NQSSHfJ/Sm9EUe8YCRZ4m6+BeysuZif1ByDs1jAZcJzpaaOygFv9NcmqInfDSm3cjDUsL2X4aR3MSLnZLGDL9x+G5sZfp1eJ9ixUAWG7MDrlphy5KFnORudvtXL1EYSBNTSzTduvh2NhlM= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848948683126.1299584332346; Mon, 19 Jan 2026 10:55:48 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNX-0007Gf-3I; Mon, 19 Jan 2026 13:53:31 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN7-0006S2-7H for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:07 -0500 Received: from forwardcorp1b.mail.yandex.net ([2a02:6b8:c02:900:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN5-0005vM-2x for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:04 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 9EA5480870; Mon, 19 Jan 2026 21:53:00 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-ZPsmbJrn; Mon, 19 Jan 2026 21:53:00 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848780; bh=hSTrhzL2uKvELxftMkpgBDziCiLU8CYjWT2j2MxrYkA=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=sFi+cEHPcVRZewTbs23LnnbLFPGHhGaPbRQydH2n4xhzEz5ekA6OQvgDWdDR+Q/yc QJMYnWkeMzhRWEVayoH7szKF3rH0+ITAE6Ll29TKv5M0IDlBksh7i10eLKLKblcH/R PPspU7pGbk79QWRJT6NUCdFtGFPmh4EyorzDnN6A= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru Subject: [PATCH v4 21/23] vhost-user: make trace events more readable Date: Mon, 19 Jan 2026 21:52:25 +0300 Message-ID: <20260119185228.203296-22-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c02:900:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848950695158500 Content-Type: text/plain; charset="utf-8" Signed-off-by: Vladimir Sementsov-Ogievskiy --- hw/virtio/trace-events | 4 +-- hw/virtio/vhost-user.c | 63 ++++++++++++++++++++++++++++++++++++++++-- 2 files changed, 63 insertions(+), 4 deletions(-) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 658cc365e7..aa1ffa5e94 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -25,8 +25,8 @@ vhost_user_set_mem_table_withfd(int index, const char *na= me, uint64_t memory_siz vhost_user_postcopy_waker(const char *rb, uint64_t rb_offset) "%s + 0x%"PR= Ix64 vhost_user_postcopy_waker_found(uint64_t client_addr) "0x%"PRIx64 vhost_user_postcopy_waker_nomatch(const char *rb, uint64_t rb_offset) "%s = + 0x%"PRIx64 -vhost_user_read(uint32_t req, uint32_t flags) "req:%d flags:0x%"PRIx32"" -vhost_user_write(uint32_t req, uint32_t flags) "req:%d flags:0x%"PRIx32"" +vhost_user_read(uint32_t req, const char *req_name, uint32_t flags) "req:%= d (%s) flags:0x%"PRIx32"" +vhost_user_write(uint32_t req, const char *req_name, uint32_t flags) "req:= %d (%s) flags:0x%"PRIx32"" vhost_user_create_notifier(int idx, void *n) "idx:%d n:%p" =20 # vhost-vdpa.c diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c index aedd5a80ff..824943f1eb 100644 --- a/hw/virtio/vhost-user.c +++ b/hw/virtio/vhost-user.c @@ -119,6 +119,63 @@ typedef enum VhostUserBackendRequest { VHOST_USER_BACKEND_MAX } VhostUserBackendRequest; =20 +#define VHOST_USER_CASE(name) \ + case VHOST_USER_##name: \ + return #name; + +static const char *vhost_req_name(VhostUserRequest req) +{ + switch (req) { + VHOST_USER_CASE(NONE) + VHOST_USER_CASE(GET_FEATURES) + VHOST_USER_CASE(SET_FEATURES) + VHOST_USER_CASE(SET_OWNER) + VHOST_USER_CASE(RESET_OWNER) + VHOST_USER_CASE(SET_MEM_TABLE) + VHOST_USER_CASE(SET_LOG_BASE) + VHOST_USER_CASE(SET_LOG_FD) + VHOST_USER_CASE(SET_VRING_NUM) + VHOST_USER_CASE(SET_VRING_ADDR) + VHOST_USER_CASE(SET_VRING_BASE) + VHOST_USER_CASE(GET_VRING_BASE) + VHOST_USER_CASE(SET_VRING_KICK) + VHOST_USER_CASE(SET_VRING_CALL) + VHOST_USER_CASE(SET_VRING_ERR) + VHOST_USER_CASE(GET_PROTOCOL_FEATURES) + VHOST_USER_CASE(SET_PROTOCOL_FEATURES) + VHOST_USER_CASE(GET_QUEUE_NUM) + VHOST_USER_CASE(SET_VRING_ENABLE) + VHOST_USER_CASE(SEND_RARP) + VHOST_USER_CASE(NET_SET_MTU) + VHOST_USER_CASE(SET_BACKEND_REQ_FD) + VHOST_USER_CASE(IOTLB_MSG) + VHOST_USER_CASE(SET_VRING_ENDIAN) + VHOST_USER_CASE(GET_CONFIG) + VHOST_USER_CASE(SET_CONFIG) + VHOST_USER_CASE(CREATE_CRYPTO_SESSION) + VHOST_USER_CASE(CLOSE_CRYPTO_SESSION) + VHOST_USER_CASE(POSTCOPY_ADVISE) + VHOST_USER_CASE(POSTCOPY_LISTEN) + VHOST_USER_CASE(POSTCOPY_END) + VHOST_USER_CASE(GET_INFLIGHT_FD) + VHOST_USER_CASE(SET_INFLIGHT_FD) + VHOST_USER_CASE(GPU_SET_SOCKET) + VHOST_USER_CASE(RESET_DEVICE) + VHOST_USER_CASE(GET_MAX_MEM_SLOTS) + VHOST_USER_CASE(ADD_MEM_REG) + VHOST_USER_CASE(REM_MEM_REG) + VHOST_USER_CASE(SET_STATUS) + VHOST_USER_CASE(GET_STATUS) + VHOST_USER_CASE(GET_SHARED_OBJECT) + VHOST_USER_CASE(SET_DEVICE_STATE_FD) + VHOST_USER_CASE(CHECK_DEVICE_STATE) + default: + return ""; + } +} + +#undef VHOST_USER_CASE + typedef struct VhostUserMemoryRegion { uint64_t guest_phys_addr; uint64_t memory_size; @@ -311,7 +368,8 @@ static int vhost_user_read_header(struct vhost_dev *dev= , VhostUserMsg *msg) return -EPROTO; } =20 - trace_vhost_user_read(msg->hdr.request, msg->hdr.flags); + trace_vhost_user_read(msg->hdr.request, + vhost_req_name(msg->hdr.request), msg->hdr.flags= ); =20 return 0; } @@ -431,7 +489,8 @@ static int vhost_user_write(struct vhost_dev *dev, Vhos= tUserMsg *msg, return ret < 0 ? -saved_errno : -EIO; } =20 - trace_vhost_user_write(msg->hdr.request, msg->hdr.flags); + trace_vhost_user_write(msg->hdr.request, vhost_req_name(msg->hdr.reque= st), + msg->hdr.flags); =20 return 0; } --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848939; cv=none; d=zohomail.com; s=zohoarc; b=RcbvTKj1FbmUfHB12PBuqIGPWW/8xgux1yqBw2RSKffaS2qkv/i22jczfEi3guwkW4cIjLJC6wuzWXr9DbvVmivvMWuAc6J9rEpSf/KhktLHdgomc1PRWuFMGRvK+Rfg7TWaPwdbjp3qoH46wB4kdhiTHBn3DSj+LgjFn2EOwlI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848939; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Sj7JYJbbX7ZVV/YLpWGIm16pnz4IZglTFxCcnSFlUqs=; b=PVDsYfGU2fBUj5eFBOh0/egYTtMA85Oax8POX6nLrDD46al9sgMwswcQD2Np6kK+rM0rOCEFqnM+DnPbv7awG4WO+1lSH//r/8rGkwIo4okAVeZJmS6oDzD9sLrGfaHdoFwJnw4bbQ9abLOH1TPmQJBeKTspCKAL65BpsfI6ftE= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848939237796.4939592632875; Mon, 19 Jan 2026 10:55:39 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNV-0007AO-FW; Mon, 19 Jan 2026 13:53:29 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN8-0006SF-0o; Mon, 19 Jan 2026 13:53:09 -0500 Received: from forwardcorp1a.mail.yandex.net ([2a02:6b8:c0e:500:1:45:d181:df01]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN5-0005vW-FJ; Mon, 19 Jan 2026 13:53:05 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1a.mail.yandex.net (Yandex) with ESMTPS id 7B4C0C04E0; Mon, 19 Jan 2026 21:53:01 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-0laNPS1p; Mon, 19 Jan 2026 21:53:00 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848781; bh=Sj7JYJbbX7ZVV/YLpWGIm16pnz4IZglTFxCcnSFlUqs=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=kRhlvoYk/ntCQR+ApfjMeSp9XSMFYWmBQOHdeF9uZmqtu536VAkcYFYYOKnPiMRBk QwGDrjn+I4vVJvISBtFqbtTpkltm/DIL8CfO4TH3qVLu8nwlKWzhfNmYsXtGtCDGlL 40d0rqK7be1PQh2kuItpjGr6MiZDT2lfTeWcms0o= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz , Kevin Wolf , Hanna Reitz , qemu-block@nongnu.org (open list:Block layer core) Subject: [PATCH v4 22/23] vhost-user-blk: add some useful trace-points Date: Mon, 19 Jan 2026 21:52:26 +0300 Message-ID: <20260119185228.203296-23-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a02:6b8:c0e:500:1:45:d181:df01; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1a.mail.yandex.net X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848941389154100 Content-Type: text/plain; charset="utf-8" Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- hw/block/trace-events | 10 ++++++++++ hw/block/vhost-user-blk.c | 19 +++++++++++++++++++ 2 files changed, 29 insertions(+) diff --git a/hw/block/trace-events b/hw/block/trace-events index cc9a9f2460..dbaa5ca6cb 100644 --- a/hw/block/trace-events +++ b/hw/block/trace-events @@ -58,6 +58,16 @@ virtio_blk_handle_zone_mgmt(void *vdev, void *req, uint8= _t op, int64_t sector, i virtio_blk_handle_zone_reset_all(void *vdev, void *req, int64_t sector, in= t64_t len) "vdev %p req %p sector 0x%" PRIx64 " cap 0x%" PRIx64 "" virtio_blk_handle_zone_append(void *vdev, void *req, int64_t sector) "vdev= %p req %p, append sector 0x%" PRIx64 "" =20 +# vhost-user-blk.c +vhost_user_blk_start_in(void *vdev) "vdev %p" +vhost_user_blk_start_out(void *vdev) "vdev %p" +vhost_user_blk_stop_in(void *vdev) "vdev %p" +vhost_user_blk_stop_out(void *vdev) "vdev %p" +vhost_user_blk_connect_in(void *vdev) "vdev %p" +vhost_user_blk_connect_out(void *vdev) "vdev %p" +vhost_user_blk_device_realize_in(void *vdev) "vdev %p" +vhost_user_blk_device_realize_out(void *vdev) "vdev %p" + # hd-geometry.c hd_geometry_lchs_guess(void *blk, int cyls, int heads, int secs) "blk %p L= CHS %d %d %d" hd_geometry_guess(void *blk, uint32_t cyls, uint32_t heads, uint32_t secs,= int trans) "blk %p CHS %u %u %u trans %d" diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index c8f7156ca6..cca17b30d9 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -31,6 +31,7 @@ #include "hw/virtio/virtio-access.h" #include "system/system.h" #include "system/runstate.h" +#include "trace.h" =20 static const int user_feature_bits[] =3D { VIRTIO_BLK_F_SIZE_MAX, @@ -137,6 +138,8 @@ static int vhost_user_blk_start(VirtIODevice *vdev, Err= or **errp) VirtioBusClass *k =3D VIRTIO_BUS_GET_CLASS(qbus); int i, ret; =20 + trace_vhost_user_blk_start_in(vdev); + if (!k->set_guest_notifiers) { error_setg(errp, "binding does not support guest notifiers"); return -ENOSYS; @@ -192,6 +195,8 @@ static int vhost_user_blk_start(VirtIODevice *vdev, Err= or **errp) } s->started_vu =3D true; =20 + trace_vhost_user_blk_start_out(vdev); + return ret; =20 err_guest_notifiers: @@ -212,6 +217,8 @@ static int vhost_user_blk_stop(VirtIODevice *vdev) int ret; bool force_stop =3D false; =20 + trace_vhost_user_blk_stop_in(vdev); + if (!s->started_vu) { return 0; } @@ -233,6 +240,9 @@ static int vhost_user_blk_stop(VirtIODevice *vdev) } =20 vhost_dev_disable_notifiers(&s->dev, vdev); + + trace_vhost_user_blk_stop_out(vdev); + return ret; } =20 @@ -340,6 +350,8 @@ static int vhost_user_blk_connect(DeviceState *dev, Err= or **errp) VHostUserBlk *s =3D VHOST_USER_BLK(vdev); int ret =3D 0; =20 + trace_vhost_user_blk_connect_in(vdev); + if (s->connected) { return 0; } @@ -365,6 +377,8 @@ static int vhost_user_blk_connect(DeviceState *dev, Err= or **errp) ret =3D vhost_user_blk_start(vdev, errp); } =20 + trace_vhost_user_blk_connect_out(vdev); + return ret; } =20 @@ -455,6 +469,8 @@ static void vhost_user_blk_device_realize(DeviceState *= dev, Error **errp) int retries; int i, ret; =20 + trace_vhost_user_blk_device_realize_in(vdev); + if (!s->chardev.chr) { error_setg(errp, "chardev is mandatory"); return; @@ -514,6 +530,9 @@ static void vhost_user_blk_device_realize(DeviceState *= dev, Error **errp) qemu_chr_fe_set_handlers(&s->chardev, NULL, NULL, vhost_user_blk_event, NULL, (void *)dev, NULL, true); + + trace_vhost_user_blk_device_realize_out(vdev); + return; =20 virtio_err: --=20 2.52.0 From nobody Mon Feb 9 13:37:49 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=yandex-team.ru ARC-Seal: i=1; a=rsa-sha256; t=1768848861; cv=none; d=zohomail.com; s=zohoarc; b=ZvvioeOc2XP2aqa4x7iKi+vJVVVTgXIPlNqS0nU9qSCOsyXHIU72PQ9s0Ilc5ykgRisOyP8AKIbOlOK2VjB4R80xJZY/4Ix4bz+dgsFlNLaBLWZAk8Ix3dqHkzpTtYudHFB4RmYXekv4cBohYzoEl/vPtZbktNKdVsBJvC5g+Ao= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1768848861; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=sRTUof3aR9yyqe90RtKsurcduMWfkkRXnpVvjR0pios=; b=n2JwqIwEicMGTtOkmDhrbPpMWp1PY0VVY/Xr3npVhq1I4GTDn9IltkIPthhJk+z93INYGctOiemhLfRPEaK/fwtyswdzjfJCa5cNUK/b2H6+UqW22paxTwtsoWbK/I5w1MojYWFK7d8+AW5w8GMW5ymnaN7qVQm/L3ZpzMzq19s= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1768848860920471.1047650106757; Mon, 19 Jan 2026 10:54:20 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1vhuNY-0007JJ-4a; Mon, 19 Jan 2026 13:53:32 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN9-0006Si-0s for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:09 -0500 Received: from forwardcorp1b.mail.yandex.net ([178.154.239.136]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1vhuN6-0005vc-1E for qemu-devel@nongnu.org; Mon, 19 Jan 2026 13:53:06 -0500 Received: from mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net [IPv6:2a02:6b8:c0c:5c05:0:640:ff67:0]) by forwardcorp1b.mail.yandex.net (Yandex) with ESMTPS id 36C688862A; Mon, 19 Jan 2026 21:53:02 +0300 (MSK) Received: from vsementsov-lin (unknown [2a02:6bf:8080:934::1:38]) by mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id dqetGa1BQGk0-Li1QLaMd; Mon, 19 Jan 2026 21:53:01 +0300 Precedence: bulk X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1768848781; bh=sRTUof3aR9yyqe90RtKsurcduMWfkkRXnpVvjR0pios=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=DKePihZtrea51DjCowLNSgCl9J9tDCY1NrlMbyS97J7Q+tJptCe4YIpnTlI3rJsB4 BIqK1eRiWONrdNPgJotqOuLbWDev20Q+XqRpFEN/MRvnNjX8niuVpOQ5JVcx9spwEC 2cv9L2wsM2NYR9jUEsLUid87F03HR3FEnjzmWzYc= Authentication-Results: mail-nwsmtp-smtp-corp-main-80.iva.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com Cc: sgarzare@redhat.com, raphael@enfabrica.net, qemu-devel@nongnu.org, vsementsov@yandex-team.ru, yc-core@yandex-team.ru, d-tatianin@yandex-team.ru, Raphael Norwitz Subject: [PATCH v4 23/23] vhost: add some useful trace-points Date: Mon, 19 Jan 2026 21:52:27 +0300 Message-ID: <20260119185228.203296-24-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260119185228.203296-1-vsementsov@yandex-team.ru> References: <20260119185228.203296-1-vsementsov@yandex-team.ru> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=178.154.239.136; envelope-from=vsementsov@yandex-team.ru; helo=forwardcorp1b.mail.yandex.net X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 List-Id: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @yandex-team.ru) X-ZM-MESSAGEID: 1768848864344154100 Content-Type: text/plain; charset="utf-8" Signed-off-by: Vladimir Sementsov-Ogievskiy Reviewed-by: Daniil Tatianin Reviewed-by: Raphael Norwitz --- hw/virtio/trace-events | 12 ++++++++++-- hw/virtio/vhost.c | 20 ++++++++++++++++++-- 2 files changed, 28 insertions(+), 4 deletions(-) diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index aa1ffa5e94..2a57edc21e 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -9,8 +9,16 @@ vhost_section(const char *name) "%s" vhost_reject_section(const char *name, int d) "%s:%d" vhost_iotlb_miss(void *dev, int step) "%p step %d" vhost_dev_cleanup(void *dev) "%p" -vhost_dev_start(void *dev, const char *name, bool vrings) "%p:%s vrings:%d" -vhost_dev_stop(void *dev, const char *name, bool vrings) "%p:%s vrings:%d" +vhost_dev_start_in(void *dev, const char *name, bool vrings) "%p:%s vrings= :%d" +vhost_dev_start_out(void *dev, const char *name) "%p:%s" +vhost_dev_stop_in(void *dev, const char *name, bool vrings) "%p:%s vrings:= %d" +vhost_dev_stop_out(void *dev, const char *name) "%p:%s" +vhost_virtqueue_start_in(void *dev, const char *name, int idx) "%p:%s %d" +vhost_virtqueue_start_out(void *dev, const char *name, int idx) "%p:%s %d" +vhost_virtqueue_stop_in(void *dev, const char *name, int idx) "%p:%s %d" +vhost_virtqueue_stop_out(void *dev, const char *name, int idx) "%p:%s %d" +vhost_dev_init_in(void *dev) "%p" +vhost_dev_init_out(void *dev) "%p" =20 =20 # vhost-user.c diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index ad49b9cc2f..d241c6110f 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1337,6 +1337,8 @@ int vhost_virtqueue_start(struct vhost_dev *dev, }; struct VirtQueue *vvq =3D virtio_get_queue(vdev, idx); =20 + trace_vhost_virtqueue_start_in(dev, vdev->name, idx); + r =3D vhost_vrings_map(dev, vdev, vq, idx); if (r <=3D 0) { return r; @@ -1398,6 +1400,8 @@ int vhost_virtqueue_start(struct vhost_dev *dev, } } =20 + trace_vhost_virtqueue_start_out(dev, vdev->name, idx); + return 0; =20 fail: @@ -1416,6 +1420,8 @@ static int do_vhost_virtqueue_stop(struct vhost_dev *= dev, }; int r =3D 0; =20 + trace_vhost_virtqueue_stop_in(dev, vdev->name, idx); + if (virtio_queue_get_desc_addr(vdev, idx) =3D=3D 0) { /* Don't stop the virtqueue which might have not been started */ return 0; @@ -1449,6 +1455,8 @@ static int do_vhost_virtqueue_stop(struct vhost_dev *= dev, } =20 vhost_vrings_unmap(dev, vq, true); + + trace_vhost_virtqueue_stop_out(dev, vdev->name, idx); return r; } =20 @@ -1582,6 +1590,8 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, unsigned int used, reserved, limit; int i, r, n_initialized_vqs =3D 0; =20 + trace_vhost_dev_init_in(hdev); + hdev->vdev =3D NULL; hdev->migration_blocker =3D NULL; =20 @@ -1695,6 +1705,8 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opaq= ue, goto fail; } =20 + trace_vhost_dev_init_out(hdev); + return 0; =20 fail: @@ -2043,7 +2055,7 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODev= ice *vdev, bool vrings) /* should only be called after backend is connected */ assert(hdev->vhost_ops); =20 - trace_vhost_dev_start(hdev, vdev->name, vrings); + trace_vhost_dev_start_in(hdev, vdev->name, vrings); =20 vdev->vhost_started =3D true; hdev->started =3D true; @@ -2128,6 +2140,8 @@ int vhost_dev_start(struct vhost_dev *hdev, VirtIODev= ice *vdev, bool vrings) } } vhost_start_config_intr(hdev); + + trace_vhost_dev_start_out(hdev, vdev->name); return 0; fail_iotlb: if (vhost_dev_has_iommu(hdev) && @@ -2177,7 +2191,7 @@ static int do_vhost_dev_stop(struct vhost_dev *hdev, = VirtIODevice *vdev, event_notifier_cleanup( &hdev->vqs[VHOST_QUEUE_NUM_CONFIG_INR].masked_config_notifier); =20 - trace_vhost_dev_stop(hdev, vdev->name, vrings); + trace_vhost_dev_stop_in(hdev, vdev->name, vrings); =20 if (hdev->vhost_ops->vhost_dev_start) { hdev->vhost_ops->vhost_dev_start(hdev, false); @@ -2207,6 +2221,8 @@ static int do_vhost_dev_stop(struct vhost_dev *hdev, = VirtIODevice *vdev, hdev->started =3D false; vdev->vhost_started =3D false; hdev->vdev =3D NULL; + + trace_vhost_dev_stop_out(hdev, vdev->name); return rc; } =20 --=20 2.52.0