From nobody Sat Nov 15 07:46:05 2025 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=1755104005; cv=none; d=zohomail.com; s=zohoarc; b=hNGy9HmmJPylmCwJ9dhXGI2IzGG7a7vvgms3SqEHiam90K4+Pq1v6AFlF5SlzzDiFkveuGz53fJfdVwtoE61TXBBehjk2kY6XvLi7DLNieATHSYZamkY9vigm8WYa2G69dwRzZbXgmK+fQ3f7twkGYu6XCBKPqRuLPqYVZn4Sek= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1755104005; 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=DcrE8wJLgwC8i8U44ZWRBtCzFDtT/tQbClNKyreVrH8=; b=a78OoNBWwTD5UTIdX70BwUCjdbzxFyoK1CPI6FxWgyyjIScld1PQarQfjZ2zLI9xuTBhQyPLxyKK9VmAmK48OB6EPCXqb5PLRvAveOOtpUp34zC7CBraCScm27M9dCYfByjrMddICYUa6lpJTN7OEgJ2MngyDTrFHrUEJ5OcqSs= 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 1755104005778861.1453028563994; Wed, 13 Aug 2025 09:53:25 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1umEfk-0002mz-7V; Wed, 13 Aug 2025 12:49:56 -0400 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 1umEfQ-0002fi-WF; Wed, 13 Aug 2025 12:49:37 -0400 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 1umEfH-0007qs-Cx; Wed, 13 Aug 2025 12:49:36 -0400 Received: from mail-nwsmtp-smtp-corp-main-56.klg.yp-c.yandex.net (mail-nwsmtp-smtp-corp-main-56.klg.yp-c.yandex.net [IPv6:2a02:6b8:c42:cf2d:0:640:140f:0]) by forwardcorp1d.mail.yandex.net (Yandex) with ESMTPS id 2A9DD8121B; Wed, 13 Aug 2025 19:49:15 +0300 (MSK) Received: from vsementsov-lin.. (unknown [2a02:6bf:8080:167::1:21]) by mail-nwsmtp-smtp-corp-main-56.klg.yp-c.yandex.net (smtpcorp/Yandex) with ESMTPSA id wmOQI00FoSw0-DemGqyZj; Wed, 13 Aug 2025 19:49:14 +0300 X-Yandex-Fwd: 1 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yandex-team.ru; s=default; t=1755103754; bh=DcrE8wJLgwC8i8U44ZWRBtCzFDtT/tQbClNKyreVrH8=; h=Message-ID:Date:In-Reply-To:Cc:Subject:References:To:From; b=qQjFegNUW4mTrVSy/R+1lSX91gRV1tkPg1p3zcZbj/Kl4ye+XwWkcJMvQmcEqjIgm UphRRSANrJWxsTmo1OHWAMa2jBQshZLwsXD3Gl0E0VnTXyZaQzfJUBJ16aWQIKHk+5 uZyzUWyLKALfOmGod3YFy7LFx2w2nPJMAYe+Kp8Q= Authentication-Results: mail-nwsmtp-smtp-corp-main-56.klg.yp-c.yandex.net; dkim=pass header.i=@yandex-team.ru From: Vladimir Sementsov-Ogievskiy To: mst@redhat.com, peterx@redhat.com, farosas@suse.de, raphael@enfabrica.net Cc: sgarzare@redhat.com, marcandre.lureau@redhat.com, pbonzini@redhat.com, kwolf@redhat.com, hreitz@redhat.com, berrange@redhat.com, eblake@redhat.com, armbru@redhat.com, qemu-devel@nongnu.org, qemu-block@nongnu.org, steven.sistare@oracle.com, den-plotnikov@yandex-team.ru, vsementsov@yandex-team.ru Subject: [PATCH 15/33] vhost: final refactoring of vhost vrings map/unmap Date: Wed, 13 Aug 2025 19:48:36 +0300 Message-ID: <20250813164856.950363-16-vsementsov@yandex-team.ru> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250813164856.950363-1-vsementsov@yandex-team.ru> References: <20250813164856.950363-1-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 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 Precedence: list List-Id: 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: 1755104008703124100 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 --- hw/virtio/vhost.c | 82 ++++++++++++++++++++++++++++++----------------- 1 file changed, 52 insertions(+), 30 deletions(-) diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index c76e2dbb4e..f6ee59425f 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -498,6 +498,53 @@ static void vhost_memory_unmap(struct vhost_dev *dev, = void *buffer, } } =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_phys =3D virtio_queue_get_desc_addr(vdev, idx); + if (vq->desc_phys =3D=3D 0) { + /* Queue might not be ready for start */ + return 0; + } + vq->desc_size =3D virtio_queue_get_desc_size(vdev, idx); + vq->desc =3D vhost_memory_map(dev, vq->desc_phys, vq->desc_size, false= ); + if (!vq->desc) { + return -ENOMEM; + } + + 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 vhost_memory_map(dev, vq->avail_phys, vq->avail_size, fa= lse); + if (!vq->avail) { + goto fail; + } + + 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 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, @@ -1282,30 +1329,9 @@ int vhost_virtqueue_start(struct vhost_dev *dev, }; struct VirtQueue *vvq =3D virtio_get_queue(vdev, idx); =20 - vq->desc_phys =3D virtio_queue_get_desc_addr(vdev, idx); - if (vq->desc_phys =3D=3D 0) { - /* Queue might not be ready for start */ - return 0; - } - vq->desc_size =3D virtio_queue_get_desc_size(vdev, idx); - vq->desc =3D vhost_memory_map(dev, vq->desc_phys, vq->desc_size, false= ); - if (!vq->desc) { - r =3D -ENOMEM; - goto fail; - } - 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 vhost_memory_map(dev, vq->avail_phys, vq->avail_size, fa= lse); - if (!vq->avail) { - r =3D -ENOMEM; - goto fail; - } - 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 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); @@ -1367,9 +1393,7 @@ 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 @@ -1416,9 +1440,7 @@ 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 2.48.1