From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726241; cv=none; d=zohomail.com; s=zohoarc; b=OJRRRuUMmzKBhmc39+3oz0Zbd3JDjulohcrPC5/HvzQGpcbBQmAD+iTT1r+QIf7HXd41dNCyUFIPMMf57eBc12mjdqcU9VrP9CQKfGKO3TInh62wciJDbJqKJttVr9IsjbBztqwJ3jgKPbczu1U/20oOvDLmcKBL7/kVC2rR67A= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697726241; 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=xwkJ56Y8CyPhNwdfkrBkH0NmqylaQ1f/M06fKeI6RyE=; b=LYPmtJ1HkWgIA5cPmDv5nSfQlPnR7UWuWDtAHapOYfghN/FA0P0i9ROxqsTXoLspHfja+ReEhgbkyt8svluYX33uXt2bgGyUrrdqAXB76wziIsq5DOC26mj/JPfpByCotW4zEZe2cHZDOionKfLZ/utn0lRF/mOAosBWRB3nj7M= 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 1697726241685709.6886691086626; Thu, 19 Oct 2023 07:37:21 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qtU7L-0006hw-Qj; Thu, 19 Oct 2023 10:35:19 -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 1qtU7G-0006fw-Vg for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:35:15 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qtU7F-0000E6-0g for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:35:14 -0400 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-455-1y0Y6EfQNyK0S8OrSL8qOg-1; Thu, 19 Oct 2023 10:35:02 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 468D38EB373; Thu, 19 Oct 2023 14:35:02 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.162]) by smtp.corp.redhat.com (Postfix) with ESMTP id 15644C15BB8; Thu, 19 Oct 2023 14:34:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697726105; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=xwkJ56Y8CyPhNwdfkrBkH0NmqylaQ1f/M06fKeI6RyE=; b=c/p0N6dH32900Qv5aEOyYIUOGqC8WqWzAJz7axHIMcaPWp5VBUAyIOc9SPZxVgS4xBlGUb BqkQb9osx/mUMkEEqJeP+9RC5tkKLHhMK/ehxu3kvQvAghi+gfL78rzdI+Bc5K2Q59OOda 95rUhQNVql3o3GWmfbGMNZRd/LGEVSw= X-MC-Unique: 1y0Y6EfQNyK0S8OrSL8qOg-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 01/18] vdpa: add VhostVDPAShared Date: Thu, 19 Oct 2023 16:34:38 +0200 Message-Id: <20231019143455.2377694-2-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726243233100004 It will hold properties shared among all vhost_vdpa instances associated with of the same device. For example, we just need one iova_tree or one memory listener for the entire device. Next patches will register the vhost_vdpa memory listener at the beginning of the VM migration at the destination. This enables QEMU to map the memory to the device before stopping the VM at the source, instead of doing while both source and destination are stopped, thus minimizing the downtime. However, the destination QEMU is unaware of which vhost_vdpa struct will register its memory_listener. If the source guest has CVQ enabled, it will be the one associated with the CVQ. Otherwise, it will be the first one. Save the memory operations related members in a common place rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 5 +++++ net/vhost-vdpa.c | 24 ++++++++++++++++++++++-- 2 files changed, 27 insertions(+), 2 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 5407d54fd7..eb1a56d75a 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -30,6 +30,10 @@ typedef struct VhostVDPAHostNotifier { void *addr; } VhostVDPAHostNotifier; =20 +/* Info shared by all vhost_vdpa device models */ +typedef struct vhost_vdpa_shared { +} VhostVDPAShared; + typedef struct vhost_vdpa { int device_fd; int index; @@ -46,6 +50,7 @@ typedef struct vhost_vdpa { bool suspended; /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; + VhostVDPAShared *shared; GPtrArray *shadow_vqs; const VhostShadowVirtqueueOps *shadow_vq_ops; void *shadow_vq_ops_opaque; diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 939c984d5b..a2f9855288 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -238,6 +238,10 @@ static void vhost_vdpa_cleanup(NetClientState *nc) qemu_close(s->vhost_vdpa.device_fd); s->vhost_vdpa.device_fd =3D -1; } + if (s->vhost_vdpa.index !=3D 0) { + return; + } + g_free(s->vhost_vdpa.shared); } =20 static bool vhost_vdpa_has_vnet_hdr(NetClientState *nc) @@ -1428,6 +1432,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientS= tate *peer, bool svq, struct vhost_vdpa_iova_range iova_r= ange, uint64_t features, + VhostVDPAShared *shared, Error **errp) { NetClientState *nc =3D NULL; @@ -1463,6 +1468,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientS= tate *peer, if (queue_pair_index =3D=3D 0) { vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker= ); + s->vhost_vdpa.shared =3D g_new0(VhostVDPAShared, 1); } else if (!is_datapath) { s->cvq_cmd_out_buffer =3D mmap(NULL, vhost_vdpa_net_cvq_cmd_page_l= en(), PROT_READ | PROT_WRITE, @@ -1475,11 +1481,16 @@ static NetClientState *net_vhost_vdpa_init(NetClien= tState *peer, s->vhost_vdpa.shadow_vq_ops_opaque =3D s; s->cvq_isolated =3D cvq_isolated; } + if (queue_pair_index !=3D 0) { + s->vhost_vdpa.shared =3D shared; + } + ret =3D vhost_vdpa_add(nc, (void *)&s->vhost_vdpa, queue_pair_index, n= vqs); if (ret) { qemu_del_net_client(nc); return NULL; } + return nc; } =20 @@ -1591,17 +1602,26 @@ int net_init_vhost_vdpa(const Netdev *netdev, const= char *name, ncs =3D g_malloc0(sizeof(*ncs) * queue_pairs); =20 for (i =3D 0; i < queue_pairs; i++) { + VhostVDPAShared *shared =3D NULL; + + if (i) { + shared =3D DO_UPCAST(VhostVDPAState, nc, ncs[0])->vhost_vdpa.s= hared; + } ncs[i] =3D net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, vdpa_device_fd, i, 2, true, opts->x_s= vq, - iova_range, features, errp); + iova_range, features, shared, errp); if (!ncs[i]) goto err; } =20 if (has_cvq) { + VhostVDPAState *s0 =3D DO_UPCAST(VhostVDPAState, nc, ncs[0]); + VhostVDPAShared *shared =3D s0->vhost_vdpa.shared; + nc =3D net_vhost_vdpa_init(peer, TYPE_VHOST_VDPA, name, vdpa_device_fd, i, 1, false, - opts->x_svq, iova_range, features, errp); + opts->x_svq, iova_range, features, shared, + errp); if (!nc) goto err; } --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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bh=nQ+WpdvvJI24llpfzQGTyGYh4KyA8lB+9C1zEcUf2rs=; b=QuM20v4oKRzZ910GIS/yri8RkMB3fuV4PoN3tYtmIba40akDf97cJC9aWi8Lh+kaE7EjBz XbQoRrob4ud4lLIKt2yljndWULSTWnuH2cFPfbCPHQ2fDGKRQvNECBTh2ra5RTZoyyydwx 1eLKeZ+Fpc1+zQ84i/nIhokpfBY2AgA= X-MC-Unique: t2yfWJJCMDqJkm_Ny3-tow-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 02/18] vdpa: move iova tree to the shared struct Date: Thu, 19 Oct 2023 16:34:39 +0200 Message-Id: <20231019143455.2377694-3-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726187092100005 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iova tree to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first or last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 4 +-- hw/virtio/vhost-vdpa.c | 19 ++++++------ net/vhost-vdpa.c | 54 +++++++++++++++------------------- 3 files changed, 35 insertions(+), 42 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index eb1a56d75a..ac036055d3 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -32,6 +32,8 @@ typedef struct VhostVDPAHostNotifier { =20 /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { + /* IOVA mapping used by the Shadow Virtqueue */ + VhostIOVATree *iova_tree; } VhostVDPAShared; =20 typedef struct vhost_vdpa { @@ -48,8 +50,6 @@ typedef struct vhost_vdpa { bool shadow_data; /* Device suspended successfully */ bool suspended; - /* IOVA mapping used by the Shadow Virtqueue */ - VhostIOVATree *iova_tree; VhostVDPAShared *shared; GPtrArray *shadow_vqs; const VhostShadowVirtqueueOps *shadow_vq_ops; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 819b2d811a..9cee38cb6d 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -358,7 +358,7 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, mem_region.size =3D int128_get64(llsize) - 1, mem_region.perm =3D IOMMU_ACCESS_FLAG(true, section->readonly), =20 - r =3D vhost_iova_tree_map_alloc(v->iova_tree, &mem_region); + r =3D vhost_iova_tree_map_alloc(v->shared->iova_tree, &mem_region); if (unlikely(r !=3D IOVA_OK)) { error_report("Can't allocate a mapping (%d)", r); goto fail; @@ -379,7 +379,7 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, =20 fail_map: if (v->shadow_data) { - vhost_iova_tree_remove(v->iova_tree, mem_region); + vhost_iova_tree_remove(v->shared->iova_tree, mem_region); } =20 fail: @@ -441,13 +441,13 @@ static void vhost_vdpa_listener_region_del(MemoryList= ener *listener, .size =3D int128_get64(llsize) - 1, }; =20 - result =3D vhost_iova_tree_find_iova(v->iova_tree, &mem_region); + result =3D vhost_iova_tree_find_iova(v->shared->iova_tree, &mem_re= gion); if (!result) { /* The memory listener map wasn't mapped */ return; } iova =3D result->iova; - vhost_iova_tree_remove(v->iova_tree, *result); + vhost_iova_tree_remove(v->shared->iova_tree, *result); } vhost_vdpa_iotlb_batch_begin_once(v); /* @@ -1059,7 +1059,8 @@ static void vhost_vdpa_svq_unmap_ring(struct vhost_vd= pa *v, hwaddr addr) const DMAMap needle =3D { .translated_addr =3D addr, }; - const DMAMap *result =3D vhost_iova_tree_find_iova(v->iova_tree, &need= le); + const DMAMap *result =3D vhost_iova_tree_find_iova(v->shared->iova_tre= e, + &needle); hwaddr size; int r; =20 @@ -1075,7 +1076,7 @@ static void vhost_vdpa_svq_unmap_ring(struct vhost_vd= pa *v, hwaddr addr) return; } =20 - vhost_iova_tree_remove(v->iova_tree, *result); + vhost_iova_tree_remove(v->shared->iova_tree, *result); } =20 static void vhost_vdpa_svq_unmap_rings(struct vhost_dev *dev, @@ -1103,7 +1104,7 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa= *v, DMAMap *needle, { int r; =20 - r =3D vhost_iova_tree_map_alloc(v->iova_tree, needle); + r =3D vhost_iova_tree_map_alloc(v->shared->iova_tree, needle); if (unlikely(r !=3D IOVA_OK)) { error_setg(errp, "Cannot allocate iova (%d)", r); return false; @@ -1115,7 +1116,7 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa= *v, DMAMap *needle, needle->perm =3D=3D IOMMU_RO); if (unlikely(r !=3D 0)) { error_setg_errno(errp, -r, "Cannot map region to device"); - vhost_iova_tree_remove(v->iova_tree, *needle); + vhost_iova_tree_remove(v->shared->iova_tree, *needle); } =20 return r =3D=3D 0; @@ -1216,7 +1217,7 @@ static bool vhost_vdpa_svqs_start(struct vhost_dev *d= ev) goto err; } =20 - vhost_svq_start(svq, dev->vdev, vq, v->iova_tree); + vhost_svq_start(svq, dev->vdev, vq, v->shared->iova_tree); ok =3D vhost_vdpa_svq_map_rings(dev, svq, &addr, &err); if (unlikely(!ok)) { goto err_map; diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index a2f9855288..15e7579b13 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -345,8 +345,8 @@ static void vhost_vdpa_net_data_start_first(VhostVDPASt= ate *s) =20 add_migration_state_change_notifier(&s->migration_state); if (v->shadow_vqs_enabled) { - v->iova_tree =3D vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + v->shared->iova_tree =3D vhost_iova_tree_new(v->iova_range.first, + v->iova_range.last); } } =20 @@ -371,11 +371,6 @@ static int vhost_vdpa_net_data_start(NetClientState *n= c) return 0; } =20 - if (v->shadow_vqs_enabled) { - VhostVDPAState *s0 =3D vhost_vdpa_net_first_nc_vdpa(s); - v->iova_tree =3D s0->vhost_vdpa.iova_tree; - } - return 0; } =20 @@ -408,9 +403,8 @@ static void vhost_vdpa_net_client_stop(NetClientState *= nc) =20 dev =3D s->vhost_vdpa.dev; if (dev->vq_index + dev->nvqs =3D=3D dev->vq_index_end) { - g_clear_pointer(&s->vhost_vdpa.iova_tree, vhost_iova_tree_delete); - } else { - s->vhost_vdpa.iova_tree =3D NULL; + g_clear_pointer(&s->vhost_vdpa.shared->iova_tree, + vhost_iova_tree_delete); } } =20 @@ -464,7 +458,7 @@ static int vhost_vdpa_set_address_space_id(struct vhost= _vdpa *v, =20 static void vhost_vdpa_cvq_unmap_buf(struct vhost_vdpa *v, void *addr) { - VhostIOVATree *tree =3D v->iova_tree; + VhostIOVATree *tree =3D v->shared->iova_tree; DMAMap needle =3D { /* * No need to specify size or to look for more translations since @@ -498,7 +492,7 @@ static int vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v,= void *buf, size_t size, map.translated_addr =3D (hwaddr)(uintptr_t)buf; map.size =3D size - 1; map.perm =3D write ? IOMMU_RW : IOMMU_RO, - r =3D vhost_iova_tree_map_alloc(v->iova_tree, &map); + r =3D vhost_iova_tree_map_alloc(v->shared->iova_tree, &map); if (unlikely(r !=3D IOVA_OK)) { error_report("Cannot map injected element"); return r; @@ -513,7 +507,7 @@ static int vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v,= void *buf, size_t size, return 0; =20 dma_map_err: - vhost_iova_tree_remove(v->iova_tree, map); + vhost_iova_tree_remove(v->shared->iova_tree, map); return r; } =20 @@ -573,24 +567,22 @@ out: return 0; } =20 - if (s0->vhost_vdpa.iova_tree) { - /* - * SVQ is already configured for all virtqueues. Reuse IOVA tree = for - * simplicity, whether CVQ shares ASID with guest or not, because: - * - Memory listener need access to guest's memory addresses alloc= ated - * in the IOVA tree. - * - There should be plenty of IOVA address space for both ASID no= t to - * worry about collisions between them. Guest's translations are - * still validated with virtio virtqueue_pop so there is no risk= for - * the guest to access memory that it shouldn't. - * - * To allocate a iova tree per ASID is doable but it complicates t= he - * code and it is not worth it for the moment. - */ - v->iova_tree =3D s0->vhost_vdpa.iova_tree; - } else { - v->iova_tree =3D vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + /* + * If other vhost_vdpa already have an iova_tree, reuse it for simplic= ity, + * whether CVQ shares ASID with guest or not, because: + * - Memory listener need access to guest's memory addresses allocated= in + * the IOVA tree. + * - There should be plenty of IOVA address space for both ASID not to + * worry about collisions between them. Guest's translations are st= ill + * validated with virtio virtqueue_pop so there is no risk for the g= uest + * to access memory that it shouldn't. + * + * To allocate a iova tree per ASID is doable but it complicates the c= ode + * and it is not worth it for the moment. + */ + if (!v->shared->iova_tree) { + v->shared->iova_tree =3D vhost_iova_tree_new(v->iova_range.first, + v->iova_range.last); } =20 r =3D vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer, --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726310; cv=none; d=zohomail.com; s=zohoarc; b=ZIIlENvNwH6IIgiJPLJHmzw6ksOK3c2UC/MSpZKDvTPFQW8N5MuCOWzjWFFVSydQA1jEq9PK7TFrMEdvDk2vfnm4vscvcqX3GT/QUb5gjdbeDKvNk+IJKamRVsL4llkfAO3u0T+dnZDiG/nmyxOHlZg0j42xDK1F0yMStSrgt9E= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697726310; 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=XsIAntQYdWLeT+2YVHjDJvl/kMvjNkLvmgtOnVCusOs=; b=hoymIFWd2E8oVmIesCGyt1t3CcrTh1gJ24cP5wp6neXU8aCgTPEHSgurKE80JiVm84Thw1D3ZPWSErIo/+MylNA07MajUwrVFCD5npoU9PUQylZXTIYQLH6mSB05JC+I3IImjTqTM4QXy2YiHvjZLqc+l/H3AT/GZVSIYksMPgY= 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 1697726310512627.246075708505; Thu, 19 Oct 2023 07:38:30 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qtU7O-0006iw-St; Thu, 19 Oct 2023 10:35:22 -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 1qtU7M-0006i8-HB for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:35:20 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qtU7J-0000Gd-L2 for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:35:20 -0400 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-623-UUXGMxmJMDmHek3QD78Vaw-1; Thu, 19 Oct 2023 10:35:08 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 324658EB366; Thu, 19 Oct 2023 14:35:07 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.162]) by smtp.corp.redhat.com (Postfix) with ESMTP id 005C9C15BB8; Thu, 19 Oct 2023 14:35:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697726116; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XsIAntQYdWLeT+2YVHjDJvl/kMvjNkLvmgtOnVCusOs=; b=SHxXwtzgiKe9U3g/nPxCDye7FK+hPoHnmX96nrzpb1Wo1q5opOOdXkjjAuicosywqDOdRX rPmA+BUyC4rmhLUpW6yY+iG+rWnFRkcvgD7wJSeC7kcKIaykwWd6iABZLwn4ra6zco8tVn LxO9tR0tA6N0+PgZftV3Y2SB+IUhIvQ= X-MC-Unique: UUXGMxmJMDmHek3QD78Vaw-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 03/18] vdpa: move iova_range to vhost_vdpa_shared Date: Thu, 19 Oct 2023 16:34:40 +0200 Message-Id: <20231019143455.2377694-4-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726311468100001 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iova range to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first or last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 3 ++- hw/virtio/vdpa-dev.c | 5 ++++- hw/virtio/vhost-vdpa.c | 16 ++++++++++------ net/vhost-vdpa.c | 10 +++++----- 4 files changed, 21 insertions(+), 13 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index ac036055d3..8d52a7e498 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -32,6 +32,8 @@ typedef struct VhostVDPAHostNotifier { =20 /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { + struct vhost_vdpa_iova_range iova_range; + /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; } VhostVDPAShared; @@ -43,7 +45,6 @@ typedef struct vhost_vdpa { bool iotlb_batch_begin_sent; uint32_t address_space_id; MemoryListener listener; - struct vhost_vdpa_iova_range iova_range; uint64_t acked_features; bool shadow_vqs_enabled; /* Vdpa must send shadow addresses as IOTLB key for data queues, not G= PA */ diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index f22d5d5bc0..457960d28a 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -114,7 +114,8 @@ static void vhost_vdpa_device_realize(DeviceState *dev,= Error **errp) strerror(-ret)); goto free_vqs; } - v->vdpa.iova_range =3D iova_range; + v->vdpa.shared =3D g_new0(VhostVDPAShared, 1); + v->vdpa.shared->iova_range =3D iova_range; =20 ret =3D vhost_dev_init(&v->dev, &v->vdpa, VHOST_BACKEND_TYPE_VDPA, 0, = NULL); if (ret < 0) { @@ -162,6 +163,7 @@ vhost_cleanup: vhost_dev_cleanup(&v->dev); free_vqs: g_free(vqs); + g_free(v->vdpa.shared); out: qemu_close(v->vhostfd); v->vhostfd =3D -1; @@ -184,6 +186,7 @@ static void vhost_vdpa_device_unrealize(DeviceState *de= v) g_free(s->config); g_free(s->dev.vqs); vhost_dev_cleanup(&s->dev); + g_free(s->vdpa.shared); qemu_close(s->vhostfd); s->vhostfd =3D -1; } diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 9cee38cb6d..2bceadd118 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -213,10 +213,10 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier= *n, IOMMUTLBEntry *iotlb) RCU_READ_LOCK_GUARD(); /* check if RAM section out of device range */ llend =3D int128_add(int128_makes64(iotlb->addr_mask), int128_makes64(= iova)); - if (int128_gt(llend, int128_make64(v->iova_range.last))) { + if (int128_gt(llend, int128_make64(v->shared->iova_range.last))) { error_report("RAM section out of device range (max=3D0x%" PRIx64 ", end addr=3D0x%" PRIx64 ")", - v->iova_range.last, int128_get64(llend)); + v->shared->iova_range.last, int128_get64(llend)); return; } =20 @@ -316,8 +316,10 @@ static void vhost_vdpa_listener_region_add(MemoryListe= ner *listener, int page_size =3D qemu_target_page_size(); int page_mask =3D -page_size; =20 - if (vhost_vdpa_listener_skipped_section(section, v->iova_range.first, - v->iova_range.last, page_mask)= ) { + if (vhost_vdpa_listener_skipped_section(section, + v->shared->iova_range.first, + v->shared->iova_range.last, + page_mask)) { return; } if (memory_region_is_iommu(section->mr)) { @@ -403,8 +405,10 @@ static void vhost_vdpa_listener_region_del(MemoryListe= ner *listener, int page_size =3D qemu_target_page_size(); int page_mask =3D -page_size; =20 - if (vhost_vdpa_listener_skipped_section(section, v->iova_range.first, - v->iova_range.last, page_mask)= ) { + if (vhost_vdpa_listener_skipped_section(section, + v->shared->iova_range.first, + v->shared->iova_range.last, + page_mask)) { return; } if (memory_region_is_iommu(section->mr)) { diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 15e7579b13..9648b0ef7e 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -345,8 +345,8 @@ static void vhost_vdpa_net_data_start_first(VhostVDPASt= ate *s) =20 add_migration_state_change_notifier(&s->migration_state); if (v->shadow_vqs_enabled) { - v->shared->iova_tree =3D vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + v->shared->iova_tree =3D vhost_iova_tree_new(v->shared->iova_range= .first, + v->shared->iova_range.l= ast); } } =20 @@ -581,8 +581,8 @@ out: * and it is not worth it for the moment. */ if (!v->shared->iova_tree) { - v->shared->iova_tree =3D vhost_iova_tree_new(v->iova_range.first, - v->iova_range.last); + v->shared->iova_tree =3D vhost_iova_tree_new(v->shared->iova_range= .first, + v->shared->iova_range.l= ast); } =20 r =3D vhost_vdpa_cvq_map_buf(&s->vhost_vdpa, s->cvq_cmd_out_buffer, @@ -1455,12 +1455,12 @@ static NetClientState *net_vhost_vdpa_init(NetClien= tState *peer, s->always_svq =3D svq; s->migration_state.notify =3D vdpa_net_migration_state_notifier; s->vhost_vdpa.shadow_vqs_enabled =3D svq; - s->vhost_vdpa.iova_range =3D iova_range; s->vhost_vdpa.shadow_data =3D svq; if (queue_pair_index =3D=3D 0) { vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker= ); s->vhost_vdpa.shared =3D g_new0(VhostVDPAShared, 1); + s->vhost_vdpa.shared->iova_range =3D iova_range; } else if (!is_datapath) { s->cvq_cmd_out_buffer =3D mmap(NULL, vhost_vdpa_net_cvq_cmd_page_l= en(), PROT_READ | PROT_WRITE, --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726415; cv=none; d=zohomail.com; s=zohoarc; b=Xt5gZVEx/iZMayMYd4t0EzJonJUJD+coLxqVVT6cUAk5wx+shJczs9dfhCRH2VoNhIncx7PUDCJp6i4PbdoFP2HiteBXX/KeCFjDhy+WK+duDU4hrTo7Oci7hJVu6/Ez+T4ocmeZ4jUekuyVV8/bZsttl4VkYFnfsf5v4INf9Rk= ARC-Message-Signature: i=1; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 04/18] vdpa: move shadow_data to vhost_vdpa_shared Date: Thu, 19 Oct 2023 16:34:41 +0200 Message-Id: <20231019143455.2377694-5-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726415867100001 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the shadow_data member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first or last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 5 +++-- hw/virtio/vhost-vdpa.c | 6 +++--- net/vhost-vdpa.c | 23 ++++++----------------- 3 files changed, 12 insertions(+), 22 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 8d52a7e498..01e0f25e27 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -36,6 +36,9 @@ typedef struct vhost_vdpa_shared { =20 /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; + + /* Vdpa must send shadow addresses as IOTLB key for data queues, not G= PA */ + bool shadow_data; } VhostVDPAShared; =20 typedef struct vhost_vdpa { @@ -47,8 +50,6 @@ typedef struct vhost_vdpa { MemoryListener listener; uint64_t acked_features; bool shadow_vqs_enabled; - /* Vdpa must send shadow addresses as IOTLB key for data queues, not G= PA */ - bool shadow_data; /* Device suspended successfully */ bool suspended; VhostVDPAShared *shared; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 2bceadd118..ec028e4c56 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -353,7 +353,7 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, vaddr, section->readonly); =20 llsize =3D int128_sub(llend, int128_make64(iova)); - if (v->shadow_data) { + if (v->shared->shadow_data) { int r; =20 mem_region.translated_addr =3D (hwaddr)(uintptr_t)vaddr, @@ -380,7 +380,7 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, return; =20 fail_map: - if (v->shadow_data) { + if (v->shared->shadow_data) { vhost_iova_tree_remove(v->shared->iova_tree, mem_region); } =20 @@ -435,7 +435,7 @@ static void vhost_vdpa_listener_region_del(MemoryListen= er *listener, =20 llsize =3D int128_sub(llend, int128_make64(iova)); =20 - if (v->shadow_data) { + if (v->shared->shadow_data) { const DMAMap *result; const void *vaddr =3D memory_region_get_ram_ptr(section->mr) + section->offset_within_region + diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 9648b0ef7e..01202350ea 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -282,15 +282,6 @@ static ssize_t vhost_vdpa_receive(NetClientState *nc, = const uint8_t *buf, return size; } =20 -/** From any vdpa net client, get the netclient of the first queue pair */ -static VhostVDPAState *vhost_vdpa_net_first_nc_vdpa(VhostVDPAState *s) -{ - NICState *nic =3D qemu_get_nic(s->nc.peer); - NetClientState *nc0 =3D qemu_get_peer(nic->ncs, 0); - - return DO_UPCAST(VhostVDPAState, nc, nc0); -} - static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enabl= e) { struct vhost_vdpa *v =3D &s->vhost_vdpa; @@ -360,10 +351,10 @@ static int vhost_vdpa_net_data_start(NetClientState *= nc) if (s->always_svq || migration_is_setup_or_active(migrate_get_current()->state)) { v->shadow_vqs_enabled =3D true; - v->shadow_data =3D true; + v->shared->shadow_data =3D true; } else { v->shadow_vqs_enabled =3D false; - v->shadow_data =3D false; + v->shared->shadow_data =3D false; } =20 if (v->index =3D=3D 0) { @@ -513,7 +504,7 @@ dma_map_err: =20 static int vhost_vdpa_net_cvq_start(NetClientState *nc) { - VhostVDPAState *s, *s0; + VhostVDPAState *s; struct vhost_vdpa *v; int64_t cvq_group; int r; @@ -524,12 +515,10 @@ static int vhost_vdpa_net_cvq_start(NetClientState *n= c) s =3D DO_UPCAST(VhostVDPAState, nc, nc); v =3D &s->vhost_vdpa; =20 - s0 =3D vhost_vdpa_net_first_nc_vdpa(s); - v->shadow_data =3D s0->vhost_vdpa.shadow_vqs_enabled; - v->shadow_vqs_enabled =3D s0->vhost_vdpa.shadow_vqs_enabled; + v->shadow_vqs_enabled =3D s->always_svq; s->vhost_vdpa.address_space_id =3D VHOST_VDPA_GUEST_PA_ASID; =20 - if (s->vhost_vdpa.shadow_data) { + if (v->shared->shadow_data) { /* SVQ is already configured for all virtqueues */ goto out; } @@ -1455,12 +1444,12 @@ static NetClientState *net_vhost_vdpa_init(NetClien= tState *peer, s->always_svq =3D svq; s->migration_state.notify =3D vdpa_net_migration_state_notifier; s->vhost_vdpa.shadow_vqs_enabled =3D svq; - s->vhost_vdpa.shadow_data =3D svq; if (queue_pair_index =3D=3D 0) { vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker= ); s->vhost_vdpa.shared =3D g_new0(VhostVDPAShared, 1); s->vhost_vdpa.shared->iova_range =3D iova_range; + s->vhost_vdpa.shared->shadow_data =3D svq; } else if (!is_datapath) { s->cvq_cmd_out_buffer =3D mmap(NULL, vhost_vdpa_net_cvq_cmd_page_l= en(), PROT_READ | PROT_WRITE, --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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bh=N7wHLIeN5Gck5O2tdxOtqndEqqCmzeZYcH0encdlSBQ=; b=fDNnXSM2SDDxG3nfwoKRQ1Nkp5vb1F4UqE0/h3YHPfeBcjX0aZxDj+xXrakJs1vflec/sp W49I+HxofR7dO+BiSjG8YbkAYuVg8k7ztiEQSTU6JfG0VufrWb0pmmnFqFBrmAXMtiOV/S gUT7vQUcbB/vNy+DsNNlqSHfacXlpN8= X-MC-Unique: pOwhhApdOAGK0cEJ8dzPgw-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 05/18] vdpa: use vdpa shared for tracing Date: Thu, 19 Oct 2023 16:34:42 +0200 Message-Id: <20231019143455.2377694-6-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726401906100001 By the end of this series dma_map and dma_unmap functions don't have the vdpa device for tracing. Movinge trace function to shared member one. Print it also in the vdpa initialization so log reader can relate them. Signed-off-by: Eugenio P=C3=A9rez --- hw/virtio/vhost-vdpa.c | 23 ++++++++++++----------- hw/virtio/trace-events | 14 +++++++------- 2 files changed, 19 insertions(+), 18 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index ec028e4c56..4f52bfa9ee 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -101,7 +101,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t a= sid, hwaddr iova, msg.iotlb.perm =3D readonly ? VHOST_ACCESS_RO : VHOST_ACCESS_RW; msg.iotlb.type =3D VHOST_IOTLB_UPDATE; =20 - trace_vhost_vdpa_dma_map(v, fd, msg.type, msg.asid, msg.iotlb.iova, + trace_vhost_vdpa_dma_map(v->shared, fd, msg.type, msg.asid, msg.iotlb.= iova, msg.iotlb.size, msg.iotlb.uaddr, msg.iotlb.pe= rm, msg.iotlb.type); =20 @@ -131,7 +131,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t= asid, hwaddr iova, msg.iotlb.size =3D size; msg.iotlb.type =3D VHOST_IOTLB_INVALIDATE; =20 - trace_vhost_vdpa_dma_unmap(v, fd, msg.type, msg.asid, msg.iotlb.iova, + trace_vhost_vdpa_dma_unmap(v->shared, fd, msg.type, msg.asid, msg.iotl= b.iova, msg.iotlb.size, msg.iotlb.type); =20 if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { @@ -151,7 +151,7 @@ static void vhost_vdpa_listener_begin_batch(struct vhos= t_vdpa *v) .iotlb.type =3D VHOST_IOTLB_BATCH_BEGIN, }; =20 - trace_vhost_vdpa_listener_begin_batch(v, fd, msg.type, msg.iotlb.type); + trace_vhost_vdpa_listener_begin_batch(v->shared, fd, msg.type, msg.iot= lb.type); if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { error_report("failed to write, fd=3D%d, errno=3D%d (%s)", fd, errno, strerror(errno)); @@ -186,7 +186,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *= listener) msg.type =3D v->msg_type; msg.iotlb.type =3D VHOST_IOTLB_BATCH_END; =20 - trace_vhost_vdpa_listener_commit(v, fd, msg.type, msg.iotlb.type); + trace_vhost_vdpa_listener_commit(v->shared, fd, msg.type, msg.iotlb.ty= pe); if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { error_report("failed to write, fd=3D%d, errno=3D%d (%s)", fd, errno, strerror(errno)); @@ -329,7 +329,8 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, =20 if (unlikely((section->offset_within_address_space & ~page_mask) !=3D (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_add_unaligned(v, section->mr->nam= e, + trace_vhost_vdpa_listener_region_add_unaligned(v->shared, + section->mr->name, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -349,7 +350,7 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, section->offset_within_region + (iova - section->offset_within_address_space); =20 - trace_vhost_vdpa_listener_region_add(v, iova, int128_get64(llend), + trace_vhost_vdpa_listener_region_add(v->shared, iova, int128_get64(lle= nd), vaddr, section->readonly); =20 llsize =3D int128_sub(llend, int128_make64(iova)); @@ -417,7 +418,8 @@ static void vhost_vdpa_listener_region_del(MemoryListen= er *listener, =20 if (unlikely((section->offset_within_address_space & ~page_mask) !=3D (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_del_unaligned(v, section->mr->nam= e, + trace_vhost_vdpa_listener_region_del_unaligned(v->shared, + section->mr->name, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -426,7 +428,7 @@ static void vhost_vdpa_listener_region_del(MemoryListen= er *listener, iova =3D ROUND_UP(section->offset_within_address_space, page_size); llend =3D vhost_vdpa_section_end(section, page_mask); =20 - trace_vhost_vdpa_listener_region_del(v, iova, + trace_vhost_vdpa_listener_region_del(v->shared, iova, int128_get64(int128_sub(llend, int128_one()))); =20 if (int128_ge(int128_make64(iova), llend)) { @@ -583,12 +585,11 @@ static void vhost_vdpa_init_svq(struct vhost_dev *hde= v, struct vhost_vdpa *v) =20 static int vhost_vdpa_init(struct vhost_dev *dev, void *opaque, Error **er= rp) { - struct vhost_vdpa *v; + struct vhost_vdpa *v =3D opaque; assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_VDPA); - trace_vhost_vdpa_init(dev, opaque); + trace_vhost_vdpa_init(dev, v->shared, opaque); int ret; =20 - v =3D opaque; v->dev =3D dev; dev->opaque =3D opaque ; v->listener =3D vhost_vdpa_memory_listener; diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events index 1cb9027d1e..ad2196bc39 100644 --- a/hw/virtio/trace-events +++ b/hw/virtio/trace-events @@ -30,16 +30,16 @@ vhost_user_write(uint32_t req, uint32_t flags) "req:%d = flags:0x%"PRIx32"" vhost_user_create_notifier(int idx, void *n) "idx:%d n:%p" =20 # vhost-vdpa.c -vhost_vdpa_dma_map(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, u= int64_t iova, uint64_t size, uint64_t uaddr, uint8_t perm, uint8_t type) "v= dpa:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0= x%"PRIx64" uaddr: 0x%"PRIx64" perm: 0x%"PRIx8" type: %"PRIu8 -vhost_vdpa_dma_unmap(void *vdpa, int fd, uint32_t msg_type, uint32_t asid,= uint64_t iova, uint64_t size, uint8_t type) "vdpa:%p fd: %d msg_type: %"PR= Iu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" type: %"PRIu8 -vhost_vdpa_listener_begin_batch(void *v, int fd, uint32_t msg_type, uint8_= t type) "vdpa:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 -vhost_vdpa_listener_commit(void *v, int fd, uint32_t msg_type, uint8_t typ= e) "vdpa:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 -vhost_vdpa_listener_region_add_unaligned(void *v, const char *name, uint64= _t offset_as, uint64_t offset_page) "vdpa: %p region %s offset_within_addre= ss_space %"PRIu64" offset_within_region %"PRIu64 +vhost_vdpa_dma_map(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, u= int64_t iova, uint64_t size, uint64_t uaddr, uint8_t perm, uint8_t type) "v= dpa_shared:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" = size: 0x%"PRIx64" uaddr: 0x%"PRIx64" perm: 0x%"PRIx8" type: %"PRIu8 +vhost_vdpa_dma_unmap(void *vdpa, int fd, uint32_t msg_type, uint32_t asid,= uint64_t iova, uint64_t size, uint8_t type) "vdpa_shared:%p fd: %d msg_typ= e: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" type: %"PR= Iu8 +vhost_vdpa_listener_begin_batch(void *v, int fd, uint32_t msg_type, uint8_= t type) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 +vhost_vdpa_listener_commit(void *v, int fd, uint32_t msg_type, uint8_t typ= e) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8 +vhost_vdpa_listener_region_add_unaligned(void *v, const char *name, uint64= _t offset_as, uint64_t offset_page) "vdpa_shared: %p region %s offset_withi= n_address_space %"PRIu64" offset_within_region %"PRIu64 vhost_vdpa_listener_region_add(void *vdpa, uint64_t iova, uint64_t llend, = void *vaddr, bool readonly) "vdpa: %p iova 0x%"PRIx64" llend 0x%"PRIx64" va= ddr: %p read-only: %d" -vhost_vdpa_listener_region_del_unaligned(void *v, const char *name, uint64= _t offset_as, uint64_t offset_page) "vdpa: %p region %s offset_within_addre= ss_space %"PRIu64" offset_within_region %"PRIu64 +vhost_vdpa_listener_region_del_unaligned(void *v, const char *name, uint64= _t offset_as, uint64_t offset_page) "vdpa_shared: %p region %s offset_withi= n_address_space %"PRIu64" offset_within_region %"PRIu64 vhost_vdpa_listener_region_del(void *vdpa, uint64_t iova, uint64_t llend) = "vdpa: %p iova 0x%"PRIx64" llend 0x%"PRIx64 vhost_vdpa_add_status(void *dev, uint8_t status) "dev: %p status: 0x%"PRIx8 -vhost_vdpa_init(void *dev, void *vdpa) "dev: %p vdpa: %p" +vhost_vdpa_init(void *dev, void *s, void *vdpa) "dev: %p, common dev: %p v= dpa: %p" vhost_vdpa_cleanup(void *dev, void *vdpa) "dev: %p vdpa: %p" vhost_vdpa_memslots_limit(void *dev, int ret) "dev: %p =3D 0x%x" vhost_vdpa_set_mem_table(void *dev, uint32_t nregions, uint32_t padding) "= dev: %p nregions: %"PRIu32" padding: 0x%"PRIx32 --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 06/18] vdpa: move file descriptor to vhost_vdpa_shared Date: Thu, 19 Oct 2023 16:34:43 +0200 Message-Id: <20231019143455.2377694-7-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726263310100006 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the file descriptor to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vdpa-dev.c | 2 +- hw/virtio/vhost-vdpa.c | 14 +++++++------- net/vhost-vdpa.c | 11 ++++------- 4 files changed, 13 insertions(+), 16 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 01e0f25e27..796a180afa 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -32,6 +32,7 @@ typedef struct VhostVDPAHostNotifier { =20 /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { + int device_fd; struct vhost_vdpa_iova_range iova_range; =20 /* IOVA mapping used by the Shadow Virtqueue */ @@ -42,7 +43,6 @@ typedef struct vhost_vdpa_shared { } VhostVDPAShared; =20 typedef struct vhost_vdpa { - int device_fd; int index; uint32_t msg_type; bool iotlb_batch_begin_sent; diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c index 457960d28a..8774986571 100644 --- a/hw/virtio/vdpa-dev.c +++ b/hw/virtio/vdpa-dev.c @@ -66,7 +66,6 @@ static void vhost_vdpa_device_realize(DeviceState *dev, E= rror **errp) if (*errp) { return; } - v->vdpa.device_fd =3D v->vhostfd; =20 v->vdev_id =3D vhost_vdpa_device_get_u32(v->vhostfd, VHOST_VDPA_GET_DEVICE_ID, errp); @@ -115,6 +114,7 @@ static void vhost_vdpa_device_realize(DeviceState *dev,= Error **errp) goto free_vqs; } v->vdpa.shared =3D g_new0(VhostVDPAShared, 1); + v->vdpa.shared->device_fd =3D v->vhostfd; v->vdpa.shared->iova_range =3D iova_range; =20 ret =3D vhost_dev_init(&v->dev, &v->vdpa, VHOST_BACKEND_TYPE_VDPA, 0, = NULL); diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 4f52bfa9ee..298aefd065 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -90,7 +90,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asi= d, hwaddr iova, hwaddr size, void *vaddr, bool readonly) { struct vhost_msg_v2 msg =3D {}; - int fd =3D v->device_fd; + int fd =3D v->shared->device_fd; int ret =3D 0; =20 msg.type =3D v->msg_type; @@ -122,7 +122,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t= asid, hwaddr iova, hwaddr size) { struct vhost_msg_v2 msg =3D {}; - int fd =3D v->device_fd; + int fd =3D v->shared->device_fd; int ret =3D 0; =20 msg.type =3D v->msg_type; @@ -145,7 +145,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t= asid, hwaddr iova, =20 static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) { - int fd =3D v->device_fd; + int fd =3D v->shared->device_fd; struct vhost_msg_v2 msg =3D { .type =3D v->msg_type, .iotlb.type =3D VHOST_IOTLB_BATCH_BEGIN, @@ -173,7 +173,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *= listener) struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); struct vhost_dev *dev =3D v->dev; struct vhost_msg_v2 msg =3D {}; - int fd =3D v->device_fd; + int fd =3D v->shared->device_fd; =20 if (!(dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { return; @@ -498,7 +498,7 @@ static int vhost_vdpa_call(struct vhost_dev *dev, unsig= ned long int request, void *arg) { struct vhost_vdpa *v =3D dev->opaque; - int fd =3D v->device_fd; + int fd =3D v->shared->device_fd; int ret; =20 assert(dev->vhost_ops->backend_type =3D=3D VHOST_BACKEND_TYPE_VDPA); @@ -656,7 +656,7 @@ static int vhost_vdpa_host_notifier_init(struct vhost_d= ev *dev, int queue_index) struct vhost_vdpa *v =3D dev->opaque; VirtIODevice *vdev =3D dev->vdev; VhostVDPAHostNotifier *n; - int fd =3D v->device_fd; + int fd =3D v->shared->device_fd; void *addr; char *name; =20 @@ -1285,7 +1285,7 @@ static void vhost_vdpa_suspend(struct vhost_dev *dev) =20 if (dev->backend_cap & BIT_ULL(VHOST_BACKEND_F_SUSPEND)) { trace_vhost_vdpa_suspend(dev); - r =3D ioctl(v->device_fd, VHOST_VDPA_SUSPEND); + r =3D ioctl(v->shared->device_fd, VHOST_VDPA_SUSPEND); if (unlikely(r)) { error_report("Cannot suspend: %s(%d)", g_strerror(errno), errn= o); } else { diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 01202350ea..4d42d7a742 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -233,14 +233,11 @@ static void vhost_vdpa_cleanup(NetClientState *nc) vhost_net_cleanup(s->vhost_net); g_free(s->vhost_net); s->vhost_net =3D NULL; - } - if (s->vhost_vdpa.device_fd >=3D 0) { - qemu_close(s->vhost_vdpa.device_fd); - s->vhost_vdpa.device_fd =3D -1; } if (s->vhost_vdpa.index !=3D 0) { return; } + qemu_close(s->vhost_vdpa.shared->device_fd); g_free(s->vhost_vdpa.shared); } =20 @@ -439,7 +436,7 @@ static int vhost_vdpa_set_address_space_id(struct vhost= _vdpa *v, }; int r; =20 - r =3D ioctl(v->device_fd, VHOST_VDPA_SET_GROUP_ASID, &asid); + r =3D ioctl(v->shared->device_fd, VHOST_VDPA_SET_GROUP_ASID, &asid); if (unlikely(r < 0)) { error_report("Can't set vq group %u asid %u, errno=3D%d (%s)", asid.index, asid.num, errno, g_strerror(errno)); @@ -535,7 +532,7 @@ static int vhost_vdpa_net_cvq_start(NetClientState *nc) return 0; } =20 - cvq_group =3D vhost_vdpa_get_vring_group(v->device_fd, + cvq_group =3D vhost_vdpa_get_vring_group(v->shared->device_fd, v->dev->vq_index_end - 1, &err); if (unlikely(cvq_group < 0)) { @@ -1439,7 +1436,6 @@ static NetClientState *net_vhost_vdpa_init(NetClientS= tate *peer, qemu_set_info_str(nc, TYPE_VHOST_VDPA); s =3D DO_UPCAST(VhostVDPAState, nc, nc); =20 - s->vhost_vdpa.device_fd =3D vdpa_device_fd; s->vhost_vdpa.index =3D queue_pair_index; s->always_svq =3D svq; s->migration_state.notify =3D vdpa_net_migration_state_notifier; @@ -1448,6 +1444,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientS= tate *peer, vhost_vdpa_net_valid_svq_features(features, &s->vhost_vdpa.migration_blocker= ); s->vhost_vdpa.shared =3D g_new0(VhostVDPAShared, 1); + s->vhost_vdpa.shared->device_fd =3D vdpa_device_fd; s->vhost_vdpa.shared->iova_range =3D iova_range; s->vhost_vdpa.shared->shadow_data =3D svq; } else if (!is_datapath) { --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726185; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 07/18] vdpa: move iotlb_batch_begin_sent to vhost_vdpa_shared Date: Thu, 19 Oct 2023 16:34:44 +0200 Message-Id: <20231019143455.2377694-8-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726187045100003 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iotlb_batch_begin_sent member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 3 ++- hw/virtio/vhost-vdpa.c | 8 ++++---- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 796a180afa..05219bbcf7 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -38,6 +38,8 @@ typedef struct vhost_vdpa_shared { /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; =20 + bool iotlb_batch_begin_sent; + /* Vdpa must send shadow addresses as IOTLB key for data queues, not G= PA */ bool shadow_data; } VhostVDPAShared; @@ -45,7 +47,6 @@ typedef struct vhost_vdpa_shared { typedef struct vhost_vdpa { int index; uint32_t msg_type; - bool iotlb_batch_begin_sent; uint32_t address_space_id; MemoryListener listener; uint64_t acked_features; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 298aefd065..3da5a19a9e 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -161,11 +161,11 @@ static void vhost_vdpa_listener_begin_batch(struct vh= ost_vdpa *v) static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v) { if (v->dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && - !v->iotlb_batch_begin_sent) { + !v->shared->iotlb_batch_begin_sent) { vhost_vdpa_listener_begin_batch(v); } =20 - v->iotlb_batch_begin_sent =3D true; + v->shared->iotlb_batch_begin_sent =3D true; } =20 static void vhost_vdpa_listener_commit(MemoryListener *listener) @@ -179,7 +179,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *= listener) return; } =20 - if (!v->iotlb_batch_begin_sent) { + if (!v->shared->iotlb_batch_begin_sent) { return; } =20 @@ -192,7 +192,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *= listener) fd, errno, strerror(errno)); } =20 - v->iotlb_batch_begin_sent =3D false; + v->shared->iotlb_batch_begin_sent =3D false; } =20 static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *i= otlb) --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 08/18] vdpa: move backend_cap to vhost_vdpa_shared Date: Thu, 19 Oct 2023 16:34:45 +0200 Message-Id: <20231019143455.2377694-9-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726237257100001 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the backend_cap member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 3 +++ hw/virtio/vhost-vdpa.c | 8 +++++--- 2 files changed, 8 insertions(+), 3 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 05219bbcf7..11ac14085a 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -38,6 +38,9 @@ typedef struct vhost_vdpa_shared { /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; =20 + /* Copy of backend features */ + uint64_t backend_cap; + bool iotlb_batch_begin_sent; =20 /* Vdpa must send shadow addresses as IOTLB key for data queues, not G= PA */ diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 3da5a19a9e..124323de43 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -160,7 +160,7 @@ static void vhost_vdpa_listener_begin_batch(struct vhos= t_vdpa *v) =20 static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v) { - if (v->dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && + if (v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && !v->shared->iotlb_batch_begin_sent) { vhost_vdpa_listener_begin_batch(v); } @@ -171,11 +171,10 @@ static void vhost_vdpa_iotlb_batch_begin_once(struct = vhost_vdpa *v) static void vhost_vdpa_listener_commit(MemoryListener *listener) { struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); - struct vhost_dev *dev =3D v->dev; struct vhost_msg_v2 msg =3D {}; int fd =3D v->shared->device_fd; =20 - if (!(dev->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { + if (!(v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH)= )) { return; } =20 @@ -833,6 +832,8 @@ static int vhost_vdpa_set_features(struct vhost_dev *de= v, =20 static int vhost_vdpa_set_backend_cap(struct vhost_dev *dev) { + struct vhost_vdpa *v =3D dev->opaque; + uint64_t features; uint64_t f =3D 0x1ULL << VHOST_BACKEND_F_IOTLB_MSG_V2 | 0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH | @@ -854,6 +855,7 @@ static int vhost_vdpa_set_backend_cap(struct vhost_dev = *dev) } =20 dev->backend_cap =3D features; + v->shared->backend_cap =3D features; =20 return 0; } --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 09/18] vdpa: remove msg type of vhost_vdpa Date: Thu, 19 Oct 2023 16:34:46 +0200 Message-Id: <20231019143455.2377694-10-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726243233100003 It is always VHOST_IOTLB_MSG_V2. We can always make it back per vhost_dev if needed. This change makes easier for vhost_vdpa_map and unmap not to depend on vhost_vdpa but only in VhostVDPAShared. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 1 - hw/virtio/vhost-vdpa.c | 9 ++++----- 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 11ac14085a..5bd964dac5 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -49,7 +49,6 @@ typedef struct vhost_vdpa_shared { =20 typedef struct vhost_vdpa { int index; - uint32_t msg_type; uint32_t address_space_id; MemoryListener listener; uint64_t acked_features; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 124323de43..66ae8ff6f4 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -93,7 +93,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asi= d, hwaddr iova, int fd =3D v->shared->device_fd; int ret =3D 0; =20 - msg.type =3D v->msg_type; + msg.type =3D VHOST_IOTLB_MSG_V2; msg.asid =3D asid; msg.iotlb.iova =3D iova; msg.iotlb.size =3D size; @@ -125,7 +125,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t= asid, hwaddr iova, int fd =3D v->shared->device_fd; int ret =3D 0; =20 - msg.type =3D v->msg_type; + msg.type =3D VHOST_IOTLB_MSG_V2; msg.asid =3D asid; msg.iotlb.iova =3D iova; msg.iotlb.size =3D size; @@ -147,7 +147,7 @@ static void vhost_vdpa_listener_begin_batch(struct vhos= t_vdpa *v) { int fd =3D v->shared->device_fd; struct vhost_msg_v2 msg =3D { - .type =3D v->msg_type, + .type =3D VHOST_IOTLB_MSG_V2, .iotlb.type =3D VHOST_IOTLB_BATCH_BEGIN, }; =20 @@ -182,7 +182,7 @@ static void vhost_vdpa_listener_commit(MemoryListener *= listener) return; } =20 - msg.type =3D v->msg_type; + msg.type =3D VHOST_IOTLB_MSG_V2; msg.iotlb.type =3D VHOST_IOTLB_BATCH_END; =20 trace_vhost_vdpa_listener_commit(v->shared, fd, msg.type, msg.iotlb.ty= pe); @@ -592,7 +592,6 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void = *opaque, Error **errp) v->dev =3D dev; dev->opaque =3D opaque ; v->listener =3D vhost_vdpa_memory_listener; - v->msg_type =3D VHOST_IOTLB_MSG_V2; vhost_vdpa_init_svq(dev, v); =20 error_propagate(&dev->migration_blocker, v->migration_blocker); 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bh=DMCHCDQ3/u8wdbLU1T2mS3HKgiCdXOJRZbCEIYmjo5c=; b=WDcKjpTAPcmrsrS7IrrjAw12498emhjNS1raGk+hZ7DQmayD4z64y5GuCo6/PewySnp2Lr /tExHnNiWqLfNhiCmUjCYGRyS0jmJJyw0QJBrXrrjXIWgsN7286JlN5IYbPEIGdcXifL+k pUd6fBhDFmXDRc4MjmQDOyiInGq+uuU= X-MC-Unique: Ee-Qo9hKMGSnBlIrgdimaA-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 10/18] vdpa: move iommu_list to vhost_vdpa_shared Date: Thu, 19 Oct 2023 16:34:47 +0200 Message-Id: <20231019143455.2377694-11-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726255223100002 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the iommu_list member to VhostVDPAShared so all vhost_vdpa can use it, rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vhost-vdpa.c | 4 ++-- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 5bd964dac5..3880b9e7f2 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -34,6 +34,7 @@ typedef struct VhostVDPAHostNotifier { typedef struct vhost_vdpa_shared { int device_fd; struct vhost_vdpa_iova_range iova_range; + QLIST_HEAD(, vdpa_iommu) iommu_list; =20 /* IOVA mapping used by the Shadow Virtqueue */ VhostIOVATree *iova_tree; @@ -62,7 +63,6 @@ typedef struct vhost_vdpa { struct vhost_dev *dev; Error *migration_blocker; VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX]; - QLIST_HEAD(, vdpa_iommu) iommu_list; IOMMUNotifier n; } VhostVDPA; =20 diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 66ae8ff6f4..2295daa7cc 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -278,7 +278,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener = *listener, return; } =20 - QLIST_INSERT_HEAD(&v->iommu_list, iommu, iommu_next); + QLIST_INSERT_HEAD(&v->shared->iommu_list, iommu, iommu_next); memory_region_iommu_replay(iommu->iommu_mr, &iommu->n); =20 return; @@ -291,7 +291,7 @@ static void vhost_vdpa_iommu_region_del(MemoryListener = *listener, =20 struct vdpa_iommu *iommu; =20 - QLIST_FOREACH(iommu, &v->iommu_list, iommu_next) + QLIST_FOREACH(iommu, &v->shared->iommu_list, iommu_next) { if (MEMORY_REGION(iommu->iommu_mr) =3D=3D section->mr && iommu->n.start =3D=3D section->offset_within_region) { --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726243; cv=none; d=zohomail.com; s=zohoarc; b=BvuSoBQ9B1pS1pMHvA0znI3+J8dB1qYSj1tkJLtiORQAaY2C+rUvDVtot8DtejtZSplGUCg61k61HroXiFJrIGGpeSevXUku3WLiMTvGejSU7igyXlyCxb3UBXYuiLbOftJQTfMPhomMT0kndN98r+S0H4vEkrywg6p/29hDmac= ARC-Message-Signature: i=1; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 11/18] vdpa: use VhostVDPAShared in vdpa_dma_map and unmap Date: Thu, 19 Oct 2023 16:34:48 +0200 Message-Id: <20231019143455.2377694-12-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726245225100009 The callers only have the shared information by the end of this series. Start converting this functions. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 4 +-- hw/virtio/vhost-vdpa.c | 47 +++++++++++++++++----------------- net/vhost-vdpa.c | 5 ++-- 3 files changed, 29 insertions(+), 27 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 3880b9e7f2..705c754776 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -69,9 +69,9 @@ typedef struct vhost_vdpa { int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_r= ange); int vhost_vdpa_set_vring_ready(struct vhost_vdpa *v, unsigned idx); =20 -int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_map(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size, void *vaddr, bool readonly); -int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size); =20 typedef struct vdpa_iommu { diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 2295daa7cc..0ed6550aad 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -86,11 +86,11 @@ static bool vhost_vdpa_listener_skipped_section(MemoryR= egionSection *section, * The caller must set asid =3D 0 if the device does not support asid. * This is not an ABI break since it is set to 0 by the initializer anyway. */ -int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_map(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size, void *vaddr, bool readonly) { struct vhost_msg_v2 msg =3D {}; - int fd =3D v->shared->device_fd; + int fd =3D s->device_fd; int ret =3D 0; =20 msg.type =3D VHOST_IOTLB_MSG_V2; @@ -101,7 +101,7 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t a= sid, hwaddr iova, msg.iotlb.perm =3D readonly ? VHOST_ACCESS_RO : VHOST_ACCESS_RW; msg.iotlb.type =3D VHOST_IOTLB_UPDATE; =20 - trace_vhost_vdpa_dma_map(v->shared, fd, msg.type, msg.asid, msg.iotlb.= iova, + trace_vhost_vdpa_dma_map(s, fd, msg.type, msg.asid, msg.iotlb.iova, msg.iotlb.size, msg.iotlb.uaddr, msg.iotlb.pe= rm, msg.iotlb.type); =20 @@ -118,11 +118,11 @@ int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t= asid, hwaddr iova, * The caller must set asid =3D 0 if the device does not support asid. * This is not an ABI break since it is set to 0 by the initializer anyway. */ -int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova, +int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size) { struct vhost_msg_v2 msg =3D {}; - int fd =3D v->shared->device_fd; + int fd =3D s->device_fd; int ret =3D 0; =20 msg.type =3D VHOST_IOTLB_MSG_V2; @@ -131,7 +131,7 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t= asid, hwaddr iova, msg.iotlb.size =3D size; msg.iotlb.type =3D VHOST_IOTLB_INVALIDATE; =20 - trace_vhost_vdpa_dma_unmap(v->shared, fd, msg.type, msg.asid, msg.iotl= b.iova, + trace_vhost_vdpa_dma_unmap(s, fd, msg.type, msg.asid, msg.iotlb.iova, msg.iotlb.size, msg.iotlb.type); =20 if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { @@ -143,29 +143,29 @@ int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32= _t asid, hwaddr iova, return ret; } =20 -static void vhost_vdpa_listener_begin_batch(struct vhost_vdpa *v) +static void vhost_vdpa_listener_begin_batch(VhostVDPAShared *s) { - int fd =3D v->shared->device_fd; + int fd =3D s->device_fd; struct vhost_msg_v2 msg =3D { .type =3D VHOST_IOTLB_MSG_V2, .iotlb.type =3D VHOST_IOTLB_BATCH_BEGIN, }; =20 - trace_vhost_vdpa_listener_begin_batch(v->shared, fd, msg.type, msg.iot= lb.type); + trace_vhost_vdpa_listener_begin_batch(s, fd, msg.type, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { error_report("failed to write, fd=3D%d, errno=3D%d (%s)", fd, errno, strerror(errno)); } } =20 -static void vhost_vdpa_iotlb_batch_begin_once(struct vhost_vdpa *v) +static void vhost_vdpa_iotlb_batch_begin_once(VhostVDPAShared *s) { - if (v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && - !v->shared->iotlb_batch_begin_sent) { - vhost_vdpa_listener_begin_batch(v); + if (s->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH) && + !s->iotlb_batch_begin_sent) { + vhost_vdpa_listener_begin_batch(s); } =20 - v->shared->iotlb_batch_begin_sent =3D true; + s->iotlb_batch_begin_sent =3D true; } =20 static void vhost_vdpa_listener_commit(MemoryListener *listener) @@ -225,7 +225,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *= n, IOMMUTLBEntry *iotlb) if (!memory_get_xlat_addr(iotlb, &vaddr, NULL, &read_only, NULL)) { return; } - ret =3D vhost_vdpa_dma_map(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret =3D vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, io= va, iotlb->addr_mask + 1, vaddr, read_only); if (ret) { error_report("vhost_vdpa_dma_map(%p, 0x%" HWADDR_PRIx ", " @@ -233,7 +233,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *= n, IOMMUTLBEntry *iotlb) v, iova, iotlb->addr_mask + 1, vaddr, ret); } } else { - ret =3D vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret =3D vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, = iova, iotlb->addr_mask + 1); if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " @@ -369,8 +369,8 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, iova =3D mem_region.iova; } =20 - vhost_vdpa_iotlb_batch_begin_once(v); - ret =3D vhost_vdpa_dma_map(v, VHOST_VDPA_GUEST_PA_ASID, iova, + vhost_vdpa_iotlb_batch_begin_once(v->shared); + ret =3D vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize), vaddr, section->readonl= y); if (ret) { error_report("vhost vdpa map fail!"); @@ -454,13 +454,13 @@ static void vhost_vdpa_listener_region_del(MemoryList= ener *listener, iova =3D result->iova; vhost_iova_tree_remove(v->shared->iova_tree, *result); } - vhost_vdpa_iotlb_batch_begin_once(v); + vhost_vdpa_iotlb_batch_begin_once(v->shared); /* * The unmap ioctl doesn't accept a full 64-bit. need to check it */ if (int128_eq(llsize, int128_2_64())) { llsize =3D int128_rshift(llsize, 1); - ret =3D vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret =3D vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, = iova, int128_get64(llsize)); =20 if (ret) { @@ -470,7 +470,7 @@ static void vhost_vdpa_listener_region_del(MemoryListen= er *listener, } iova +=3D int128_get64(llsize); } - ret =3D vhost_vdpa_dma_unmap(v, VHOST_VDPA_GUEST_PA_ASID, iova, + ret =3D vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize)); =20 if (ret) { @@ -1076,7 +1076,8 @@ static void vhost_vdpa_svq_unmap_ring(struct vhost_vd= pa *v, hwaddr addr) } =20 size =3D ROUND_UP(result->size, qemu_real_host_page_size()); - r =3D vhost_vdpa_dma_unmap(v, v->address_space_id, result->iova, size); + r =3D vhost_vdpa_dma_unmap(v->shared, v->address_space_id, result->iov= a, + size); if (unlikely(r < 0)) { error_report("Unable to unmap SVQ vring: %s (%d)", g_strerror(-r),= -r); return; @@ -1116,7 +1117,7 @@ static bool vhost_vdpa_svq_map_ring(struct vhost_vdpa= *v, DMAMap *needle, return false; } =20 - r =3D vhost_vdpa_dma_map(v, v->address_space_id, needle->iova, + r =3D vhost_vdpa_dma_map(v->shared, v->address_space_id, needle->iova, needle->size + 1, (void *)(uintptr_t)needle->translated_addr, needle->perm =3D=3D IOMMU_RO); diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 4d42d7a742..31df7e91a1 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -462,7 +462,8 @@ static void vhost_vdpa_cvq_unmap_buf(struct vhost_vdpa = *v, void *addr) return; } =20 - r =3D vhost_vdpa_dma_unmap(v, v->address_space_id, map->iova, map->siz= e + 1); + r =3D vhost_vdpa_dma_unmap(v->shared, v->address_space_id, map->iova, + map->size + 1); if (unlikely(r !=3D 0)) { error_report("Device cannot unmap: %s(%d)", g_strerror(r), r); } @@ -486,7 +487,7 @@ static int vhost_vdpa_cvq_map_buf(struct vhost_vdpa *v,= void *buf, size_t size, return r; } =20 - r =3D vhost_vdpa_dma_map(v, v->address_space_id, map.iova, + r =3D vhost_vdpa_dma_map(v->shared, v->address_space_id, map.iova, vhost_vdpa_net_cvq_cmd_page_len(), buf, !write); if (unlikely(r < 0)) { goto dma_map_err; --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 12/18] vdpa: use dev_shared in vdpa_iommu Date: Thu, 19 Oct 2023 16:34:49 +0200 Message-Id: <20231019143455.2377694-13-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726287328100004 The memory listener functions can call these too. Make vdpa_iommu work with VhostVDPAShared. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vhost-vdpa.c | 16 ++++++++-------- 2 files changed, 9 insertions(+), 9 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 705c754776..2abee2164a 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -75,7 +75,7 @@ int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asi= d, hwaddr iova, hwaddr size); =20 typedef struct vdpa_iommu { - struct vhost_vdpa *dev; + VhostVDPAShared *dev_shared; IOMMUMemoryRegion *iommu_mr; hwaddr iommu_offset; IOMMUNotifier n; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 0ed6550aad..61553ad196 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -199,7 +199,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *= n, IOMMUTLBEntry *iotlb) struct vdpa_iommu *iommu =3D container_of(n, struct vdpa_iommu, n); =20 hwaddr iova =3D iotlb->iova + iommu->iommu_offset; - struct vhost_vdpa *v =3D iommu->dev; + VhostVDPAShared *s =3D iommu->dev_shared; void *vaddr; int ret; Int128 llend; @@ -212,10 +212,10 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier= *n, IOMMUTLBEntry *iotlb) RCU_READ_LOCK_GUARD(); /* check if RAM section out of device range */ llend =3D int128_add(int128_makes64(iotlb->addr_mask), int128_makes64(= iova)); - if (int128_gt(llend, int128_make64(v->shared->iova_range.last))) { + if (int128_gt(llend, int128_make64(s->iova_range.last))) { error_report("RAM section out of device range (max=3D0x%" PRIx64 ", end addr=3D0x%" PRIx64 ")", - v->shared->iova_range.last, int128_get64(llend)); + s->iova_range.last, int128_get64(llend)); return; } =20 @@ -225,20 +225,20 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier= *n, IOMMUTLBEntry *iotlb) if (!memory_get_xlat_addr(iotlb, &vaddr, NULL, &read_only, NULL)) { return; } - ret =3D vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, io= va, + ret =3D vhost_vdpa_dma_map(s, VHOST_VDPA_GUEST_PA_ASID, iova, iotlb->addr_mask + 1, vaddr, read_only); if (ret) { error_report("vhost_vdpa_dma_map(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ", %p) =3D %d (%m)", - v, iova, iotlb->addr_mask + 1, vaddr, ret); + s, iova, iotlb->addr_mask + 1, vaddr, ret); } } else { - ret =3D vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, = iova, + ret =3D vhost_vdpa_dma_unmap(s, VHOST_VDPA_GUEST_PA_ASID, iova, iotlb->addr_mask + 1); if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ") =3D %d (%m)", - v, iova, iotlb->addr_mask + 1, ret); + s, iova, iotlb->addr_mask + 1, ret); } } } @@ -270,7 +270,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener = *listener, iommu_idx); iommu->iommu_offset =3D section->offset_within_address_space - section->offset_within_region; - iommu->dev =3D v; + iommu->dev_shared =3D v->shared; =20 ret =3D memory_region_register_iommu_notifier(section->mr, &iommu->n, = NULL); if (ret) { --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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bh=YRHe07RRqSSZVMNanQ4BSnSXmk1XsoBAIBkkiMVjdKs=; b=b1oXJXnVjoAPxOg6yCNx32gVx2Dm/u9Lqr+r1Ahe4dg3egnFzGqbkY/zTAswpuWZLSzSVz FHD8MS1IOZdOICPUNnVdj2nZ336zZq5bwhoCHicLbaUp2DEz4japttAeX88O9dmAUcoeq+ iJdaeAlas7UuN0AClvMBwYII3Nu7H7c= X-MC-Unique: g_dv0naZPNuG_XtJEUHzZA-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 13/18] vdpa: move memory listener to vhost_vdpa_shared Date: Thu, 19 Oct 2023 16:34:50 +0200 Message-Id: <20231019143455.2377694-14-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726283405100003 Next patches will register the vhost_vdpa memory listener while the VM is migrating at the destination, so we can map the memory to the device before stopping the VM at the source. The main goal is to reduce the downtime. However, the destination QEMU is unaware of which vhost_vdpa device will register its memory_listener. If the source guest has CVQ enabled, it will be the CVQ device. Otherwise, it will be the first one. Move the memory listener to a common place rather than always in the first / last vhost_vdpa. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 2 +- hw/virtio/vhost-vdpa.c | 84 ++++++++++++++++------------------ 2 files changed, 40 insertions(+), 46 deletions(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 2abee2164a..8f54e5edd4 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -33,6 +33,7 @@ typedef struct VhostVDPAHostNotifier { /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { int device_fd; + MemoryListener listener; struct vhost_vdpa_iova_range iova_range; QLIST_HEAD(, vdpa_iommu) iommu_list; =20 @@ -51,7 +52,6 @@ typedef struct vhost_vdpa_shared { typedef struct vhost_vdpa { int index; uint32_t address_space_id; - MemoryListener listener; uint64_t acked_features; bool shadow_vqs_enabled; /* Device suspended successfully */ diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 61553ad196..7500c2fc82 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -170,28 +170,28 @@ static void vhost_vdpa_iotlb_batch_begin_once(VhostVD= PAShared *s) =20 static void vhost_vdpa_listener_commit(MemoryListener *listener) { - struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); + VhostVDPAShared *s =3D container_of(listener, VhostVDPAShared, listene= r); struct vhost_msg_v2 msg =3D {}; - int fd =3D v->shared->device_fd; + int fd =3D s->device_fd; =20 - if (!(v->shared->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH)= )) { + if (!(s->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) { return; } =20 - if (!v->shared->iotlb_batch_begin_sent) { + if (!s->iotlb_batch_begin_sent) { return; } =20 msg.type =3D VHOST_IOTLB_MSG_V2; msg.iotlb.type =3D VHOST_IOTLB_BATCH_END; =20 - trace_vhost_vdpa_listener_commit(v->shared, fd, msg.type, msg.iotlb.ty= pe); + trace_vhost_vdpa_listener_commit(s, fd, msg.type, msg.iotlb.type); if (write(fd, &msg, sizeof(msg)) !=3D sizeof(msg)) { error_report("failed to write, fd=3D%d, errno=3D%d (%s)", fd, errno, strerror(errno)); } =20 - v->shared->iotlb_batch_begin_sent =3D false; + s->iotlb_batch_begin_sent =3D false; } =20 static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *n, IOMMUTLBEntry *i= otlb) @@ -246,7 +246,7 @@ static void vhost_vdpa_iommu_map_notify(IOMMUNotifier *= n, IOMMUTLBEntry *iotlb) static void vhost_vdpa_iommu_region_add(MemoryListener *listener, MemoryRegionSection *section) { - struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); + VhostVDPAShared *s =3D container_of(listener, VhostVDPAShared, listene= r); =20 struct vdpa_iommu *iommu; Int128 end; @@ -270,7 +270,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener = *listener, iommu_idx); iommu->iommu_offset =3D section->offset_within_address_space - section->offset_within_region; - iommu->dev_shared =3D v->shared; + iommu->dev_shared =3D s; =20 ret =3D memory_region_register_iommu_notifier(section->mr, &iommu->n, = NULL); if (ret) { @@ -278,7 +278,7 @@ static void vhost_vdpa_iommu_region_add(MemoryListener = *listener, return; } =20 - QLIST_INSERT_HEAD(&v->shared->iommu_list, iommu, iommu_next); + QLIST_INSERT_HEAD(&s->iommu_list, iommu, iommu_next); memory_region_iommu_replay(iommu->iommu_mr, &iommu->n); =20 return; @@ -287,11 +287,11 @@ static void vhost_vdpa_iommu_region_add(MemoryListene= r *listener, static void vhost_vdpa_iommu_region_del(MemoryListener *listener, MemoryRegionSection *section) { - struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); + VhostVDPAShared *s =3D container_of(listener, VhostVDPAShared, listene= r); =20 struct vdpa_iommu *iommu; =20 - QLIST_FOREACH(iommu, &v->shared->iommu_list, iommu_next) + QLIST_FOREACH(iommu, &s->iommu_list, iommu_next) { if (MEMORY_REGION(iommu->iommu_mr) =3D=3D section->mr && iommu->n.start =3D=3D section->offset_within_region) { @@ -307,7 +307,7 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, MemoryRegionSection *section) { DMAMap mem_region =3D {}; - struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); + VhostVDPAShared *s =3D container_of(listener, VhostVDPAShared, listene= r); hwaddr iova; Int128 llend, llsize; void *vaddr; @@ -315,10 +315,8 @@ static void vhost_vdpa_listener_region_add(MemoryListe= ner *listener, int page_size =3D qemu_target_page_size(); int page_mask =3D -page_size; =20 - if (vhost_vdpa_listener_skipped_section(section, - v->shared->iova_range.first, - v->shared->iova_range.last, - page_mask)) { + if (vhost_vdpa_listener_skipped_section(section, s->iova_range.first, + s->iova_range.last, page_mask)= ) { return; } if (memory_region_is_iommu(section->mr)) { @@ -328,8 +326,7 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, =20 if (unlikely((section->offset_within_address_space & ~page_mask) !=3D (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_add_unaligned(v->shared, - section->mr->name, + trace_vhost_vdpa_listener_region_add_unaligned(s, section->mr->nam= e, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -349,18 +346,18 @@ static void vhost_vdpa_listener_region_add(MemoryList= ener *listener, section->offset_within_region + (iova - section->offset_within_address_space); =20 - trace_vhost_vdpa_listener_region_add(v->shared, iova, int128_get64(lle= nd), + trace_vhost_vdpa_listener_region_add(s, iova, int128_get64(llend), vaddr, section->readonly); =20 llsize =3D int128_sub(llend, int128_make64(iova)); - if (v->shared->shadow_data) { + if (s->shadow_data) { int r; =20 mem_region.translated_addr =3D (hwaddr)(uintptr_t)vaddr, mem_region.size =3D int128_get64(llsize) - 1, mem_region.perm =3D IOMMU_ACCESS_FLAG(true, section->readonly), =20 - r =3D vhost_iova_tree_map_alloc(v->shared->iova_tree, &mem_region); + r =3D vhost_iova_tree_map_alloc(s->iova_tree, &mem_region); if (unlikely(r !=3D IOVA_OK)) { error_report("Can't allocate a mapping (%d)", r); goto fail; @@ -369,8 +366,8 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, iova =3D mem_region.iova; } =20 - vhost_vdpa_iotlb_batch_begin_once(v->shared); - ret =3D vhost_vdpa_dma_map(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, + vhost_vdpa_iotlb_batch_begin_once(s); + ret =3D vhost_vdpa_dma_map(s, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize), vaddr, section->readonl= y); if (ret) { error_report("vhost vdpa map fail!"); @@ -380,8 +377,8 @@ static void vhost_vdpa_listener_region_add(MemoryListen= er *listener, return; =20 fail_map: - if (v->shared->shadow_data) { - vhost_iova_tree_remove(v->shared->iova_tree, mem_region); + if (s->shadow_data) { + vhost_iova_tree_remove(s->iova_tree, mem_region); } =20 fail: @@ -398,17 +395,15 @@ fail: static void vhost_vdpa_listener_region_del(MemoryListener *listener, MemoryRegionSection *section) { - struct vhost_vdpa *v =3D container_of(listener, struct vhost_vdpa, lis= tener); + VhostVDPAShared *s =3D container_of(listener, VhostVDPAShared, listene= r); hwaddr iova; Int128 llend, llsize; int ret; int page_size =3D qemu_target_page_size(); int page_mask =3D -page_size; =20 - if (vhost_vdpa_listener_skipped_section(section, - v->shared->iova_range.first, - v->shared->iova_range.last, - page_mask)) { + if (vhost_vdpa_listener_skipped_section(section, s->iova_range.first, + s->iova_range.last, page_mask)= ) { return; } if (memory_region_is_iommu(section->mr)) { @@ -417,8 +412,7 @@ static void vhost_vdpa_listener_region_del(MemoryListen= er *listener, =20 if (unlikely((section->offset_within_address_space & ~page_mask) !=3D (section->offset_within_region & ~page_mask))) { - trace_vhost_vdpa_listener_region_del_unaligned(v->shared, - section->mr->name, + trace_vhost_vdpa_listener_region_del_unaligned(s, section->mr->nam= e, section->offset_within_address_space & ~page_mask, section->offset_within_region & ~page_mask); return; @@ -427,7 +421,7 @@ static void vhost_vdpa_listener_region_del(MemoryListen= er *listener, iova =3D ROUND_UP(section->offset_within_address_space, page_size); llend =3D vhost_vdpa_section_end(section, page_mask); =20 - trace_vhost_vdpa_listener_region_del(v->shared, iova, + trace_vhost_vdpa_listener_region_del(s, iova, int128_get64(int128_sub(llend, int128_one()))); =20 if (int128_ge(int128_make64(iova), llend)) { @@ -436,7 +430,7 @@ static void vhost_vdpa_listener_region_del(MemoryListen= er *listener, =20 llsize =3D int128_sub(llend, int128_make64(iova)); =20 - if (v->shared->shadow_data) { + if (s->shadow_data) { const DMAMap *result; const void *vaddr =3D memory_region_get_ram_ptr(section->mr) + section->offset_within_region + @@ -446,37 +440,37 @@ static void vhost_vdpa_listener_region_del(MemoryList= ener *listener, .size =3D int128_get64(llsize) - 1, }; =20 - result =3D vhost_iova_tree_find_iova(v->shared->iova_tree, &mem_re= gion); + result =3D vhost_iova_tree_find_iova(s->iova_tree, &mem_region); if (!result) { /* The memory listener map wasn't mapped */ return; } iova =3D result->iova; - vhost_iova_tree_remove(v->shared->iova_tree, *result); + vhost_iova_tree_remove(s->iova_tree, *result); } - vhost_vdpa_iotlb_batch_begin_once(v->shared); + vhost_vdpa_iotlb_batch_begin_once(s); /* * The unmap ioctl doesn't accept a full 64-bit. need to check it */ if (int128_eq(llsize, int128_2_64())) { llsize =3D int128_rshift(llsize, 1); - ret =3D vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, = iova, + ret =3D vhost_vdpa_dma_unmap(s, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize)); =20 if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ") =3D %d (%m)", - v, iova, int128_get64(llsize), ret); + s, iova, int128_get64(llsize), ret); } iova +=3D int128_get64(llsize); } - ret =3D vhost_vdpa_dma_unmap(v->shared, VHOST_VDPA_GUEST_PA_ASID, iova, + ret =3D vhost_vdpa_dma_unmap(s, VHOST_VDPA_GUEST_PA_ASID, iova, int128_get64(llsize)); =20 if (ret) { error_report("vhost_vdpa_dma_unmap(%p, 0x%" HWADDR_PRIx ", " "0x%" HWADDR_PRIx ") =3D %d (%m)", - v, iova, int128_get64(llsize), ret); + s, iova, int128_get64(llsize), ret); } =20 memory_region_unref(section->mr); @@ -591,7 +585,7 @@ static int vhost_vdpa_init(struct vhost_dev *dev, void = *opaque, Error **errp) =20 v->dev =3D dev; dev->opaque =3D opaque ; - v->listener =3D vhost_vdpa_memory_listener; + v->shared->listener =3D vhost_vdpa_memory_listener; vhost_vdpa_init_svq(dev, v); =20 error_propagate(&dev->migration_blocker, v->migration_blocker); @@ -754,7 +748,7 @@ static int vhost_vdpa_cleanup(struct vhost_dev *dev) } =20 vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs); - memory_listener_unregister(&v->listener); + memory_listener_unregister(&v->shared->listener); vhost_vdpa_svq_cleanup(dev); =20 dev->opaque =3D NULL; @@ -1327,7 +1321,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev= , bool started) "IOMMU and try again"); return -1; } - memory_listener_register(&v->listener, dev->vdev->dma_as); + memory_listener_register(&v->shared->listener, dev->vdev->dma_as); =20 return vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); } @@ -1346,7 +1340,7 @@ static void vhost_vdpa_reset_status(struct vhost_dev = *dev) vhost_vdpa_reset_device(dev); vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER); - memory_listener_unregister(&v->listener); + memory_listener_unregister(&v->shared->listener); } =20 static int vhost_vdpa_set_log_base(struct vhost_dev *dev, uint64_t base, --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726286; cv=none; d=zohomail.com; s=zohoarc; b=DmKq5zRyZUBKeH3cQl3oP6H7ELgWueRKbqPzY6uxr8ZbH6ZgHNiO2o4H4cayws1GVzmoPBAOwT31uNX8R5Hf444yuA6hG5UIQdeIks9MQdUPJ5VkeRcNu0f6rO/2TqG4fNu0dFQTi5YVliti5QvGiCZ/5orAynioj/SPBF2+dM8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697726286; 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; 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Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 14/18] vdpa: do not set virtio status bits if unneeded Date: Thu, 19 Oct 2023 16:34:51 +0200 Message-Id: <20231019143455.2377694-15-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726287315100003 Next commits will set DRIVER and ACKNOWLEDGE flags repeatedly in the case of a migration destination. Let's save ioctls with this. Signed-off-by: Eugenio P=C3=A9rez --- hw/virtio/vhost-vdpa.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 7500c2fc82..cc252fc2d8 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -510,6 +510,10 @@ static int vhost_vdpa_add_status(struct vhost_dev *dev= , uint8_t status) if (ret < 0) { return ret; } + if ((s & status) =3D=3D status) { + /* Don't set bits already set */ + return 0; + } =20 s |=3D status; =20 --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726200; cv=none; d=zohomail.com; s=zohoarc; b=GQmTF74vAPwGEfFxLq69HhhfrpVW3DzAnHNrnANoWzS8qnR9fmQcP8+6NNs72BlW9o226iD7ZdErKveuxW/aIsuVoAyRpa6NjwlPIsF5HARhG8VTJH///Simq2dUUiPtvee8ddcpK14ztao/vojyBNI5zbdyRO9od2AUkQYsv6Y= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697726200; 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=OSZoggcrMrR23J5/Xh2uuJObVTFIG5OUw6hy0Fy1Dy0=; b=mlrdRodZMFLYYt5EVY9/0g9bHi+keIBerzNBbErMRgNsHUqn7BrFvUXldVdefHs4n1JTnwxMuukjEz3CffTsw4FZNyO6sKuwo7pfRXa6/iDl1USYJqV+ZQSWTYaNawMsmcoBsJqdZLefJDcy6Yss6xyultVPwWWcRFYvPH8j5zw= 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 1697726200533701.0875123021297; Thu, 19 Oct 2023 07:36:40 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qtU7k-0006p7-VJ; Thu, 19 Oct 2023 10:35:44 -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 1qtU7j-0006oN-4A for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:35:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qtU7h-0000Mq-KQ for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:35:42 -0400 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-19-9tbzNri0MNmE9PcKwG1v6Q-1; Thu, 19 Oct 2023 10:35:38 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id CCE6F185A79C; Thu, 19 Oct 2023 14:35:36 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.162]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9B80BC15BB8; Thu, 19 Oct 2023 14:35:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697726141; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=OSZoggcrMrR23J5/Xh2uuJObVTFIG5OUw6hy0Fy1Dy0=; b=UQOkT/KuDpiUlTwztMPI2mpXLymCs7QdsmMENpycMwHmQdHsJ5YR415qZUFZdJYlVzYQCL nOgoIJqpLRevoDv7tXckfX2nLYKS6nHV4GecfIa8197QqzaEcBIUBYbBOZervqHXr7TqYo U791y7ih8yNT3fIG22fqA2kVaNXhNmc= X-MC-Unique: 9tbzNri0MNmE9PcKwG1v6Q-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 15/18] vdpa: add vhost_vdpa_load_setup Date: Thu, 19 Oct 2023 16:34:52 +0200 Message-Id: <20231019143455.2377694-16-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726201071100001 Callers can use this function to setup the incoming migration. Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost-vdpa.h | 7 +++++++ hw/virtio/vhost-vdpa.c | 17 ++++++++++++++++- 2 files changed, 23 insertions(+), 1 deletion(-) diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 8f54e5edd4..edc08b7a02 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -45,6 +45,12 @@ typedef struct vhost_vdpa_shared { =20 bool iotlb_batch_begin_sent; =20 + /* + * The memory listener has been registered, so DMA maps have been sent= to + * the device. + */ + bool listener_registered; + /* Vdpa must send shadow addresses as IOTLB key for data queues, not G= PA */ bool shadow_data; } VhostVDPAShared; @@ -73,6 +79,7 @@ int vhost_vdpa_dma_map(VhostVDPAShared *s, uint32_t asid,= hwaddr iova, hwaddr size, void *vaddr, bool readonly); int vhost_vdpa_dma_unmap(VhostVDPAShared *s, uint32_t asid, hwaddr iova, hwaddr size); +int vhost_vdpa_load_setup(VhostVDPAShared *s, AddressSpace *dma_as); =20 typedef struct vdpa_iommu { VhostVDPAShared *dev_shared; diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index cc252fc2d8..bfbe4673af 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -1325,7 +1325,9 @@ static int vhost_vdpa_dev_start(struct vhost_dev *dev= , bool started) "IOMMU and try again"); return -1; } - memory_listener_register(&v->shared->listener, dev->vdev->dma_as); + if (!v->shared->listener_registered) { + memory_listener_register(&v->shared->listener, dev->vdev->dma_= as); + } =20 return vhost_vdpa_add_status(dev, VIRTIO_CONFIG_S_DRIVER_OK); } @@ -1528,3 +1530,16 @@ const VhostOps vdpa_ops =3D { .vhost_set_config_call =3D vhost_vdpa_set_config_call, .vhost_reset_status =3D vhost_vdpa_reset_status, }; + +int vhost_vdpa_load_setup(VhostVDPAShared *shared, AddressSpace *dma_as) +{ + uint8_t s =3D VIRTIO_CONFIG_S_ACKNOWLEDGE | VIRTIO_CONFIG_S_DRIVER; + int r =3D ioctl(shared->device_fd, VHOST_VDPA_SET_STATUS, &s); + if (unlikely(r < 0)) { + return r; + } + + memory_listener_register(&shared->listener, dma_as); + shared->listener_registered =3D true; + return 0; +} --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726386; cv=none; d=zohomail.com; s=zohoarc; b=SFj9gh7g30iHBdpnWo9dMkytmFVSovwb0Cs9L0+X/KCnVgvX46TSYE6ZYDxRXSctgVuP+2ElPiFLqrFtj5DurmTzGVOx3mqkvLsoxMCXVoSZnDwdKlYWghT3U7Ki79Ux3Tm/7KakuAN0Ttq1gPEk00WqhvGgjZuQUgcDu6V3wPU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697726386; 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=TtI1/7mXSdwyIYgaG5r3zTLrequ93X4VfvtMc/V9V2A=; 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bh=TtI1/7mXSdwyIYgaG5r3zTLrequ93X4VfvtMc/V9V2A=; b=bT/hvWgV2gYuvCnwdBRuCIOXP8tMWy8LxlUBKZ4BqA04EfTk7BztRnUMPh9MjYUCBF/Mbe xprshc2y+TqGpbzJm0jyNJs3qGjmo/UOosCpWjOiKfErIARA1v34WXZFSbm1nY35oAxCzZ A8NhzaBxnuXlpLTVTbWCuUoRhtlc1wY= X-MC-Unique: bfAvH8m4OPasuuNRnO4bdg-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 16/18] vdpa: add vhost_vdpa_net_load_setup NetClient callback Date: Thu, 19 Oct 2023 16:34:53 +0200 Message-Id: <20231019143455.2377694-17-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.129.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726387713100001 So the vDPA backend knows when a migration incoming starts. NicState argument is needed so we can get the dma address space. Signed-off-by: Eugenio P=C3=A9rez --- include/net/net.h | 4 ++++ net/vhost-vdpa.c | 10 ++++++++++ 2 files changed, 14 insertions(+) diff --git a/include/net/net.h b/include/net/net.h index 2fb1c9181c..e0ecf85bf6 100644 --- a/include/net/net.h +++ b/include/net/net.h @@ -42,6 +42,7 @@ typedef struct NICConf { =20 /* Net clients */ =20 +struct NICState; typedef void (NetPoll)(NetClientState *, bool enable); typedef bool (NetCanReceive)(NetClientState *); typedef int (NetStart)(NetClientState *); @@ -69,6 +70,8 @@ typedef void (SocketReadStateFinalize)(SocketReadState *r= s); typedef void (NetAnnounce)(NetClientState *); typedef bool (SetSteeringEBPF)(NetClientState *, int); typedef bool (NetCheckPeerType)(NetClientState *, ObjectClass *, Error **); +/* This can be called before start & pair, so get also the peer */ +typedef int (NetMigrationLoadSetup)(NetClientState *, struct NICState *); =20 typedef struct NetClientInfo { NetClientDriver type; @@ -98,6 +101,7 @@ typedef struct NetClientInfo { NetAnnounce *announce; SetSteeringEBPF *set_steering_ebpf; NetCheckPeerType *check_peer_type; + NetMigrationLoadSetup *load_setup; } NetClientInfo; =20 struct NetClientState { diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 31df7e91a1..507cb946d2 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -396,6 +396,15 @@ static void vhost_vdpa_net_client_stop(NetClientState = *nc) } } =20 +static int vhost_vdpa_net_load_setup(NetClientState *nc, NICState *nic) +{ + VhostVDPAState *s =3D DO_UPCAST(VhostVDPAState, nc, nc); + VirtIONet *n =3D qemu_get_nic_opaque(&nic->ncs[0]); + + vhost_vdpa_load_setup(s->vhost_vdpa.shared, n->parent_obj.dma_as); + return 0; +} + static NetClientInfo net_vhost_vdpa_info =3D { .type =3D NET_CLIENT_DRIVER_VHOST_VDPA, .size =3D sizeof(VhostVDPAState), @@ -407,6 +416,7 @@ static NetClientInfo net_vhost_vdpa_info =3D { .has_vnet_hdr =3D vhost_vdpa_has_vnet_hdr, .has_ufo =3D vhost_vdpa_has_ufo, .check_peer_type =3D vhost_vdpa_check_peer_type, + .load_setup =3D vhost_vdpa_net_load_setup, }; =20 static int64_t vhost_vdpa_get_vring_group(int device_fd, unsigned vq_index, --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726409; cv=none; d=zohomail.com; s=zohoarc; b=EhNilmhXQiJcsYrA/XfksH3yODLZhs/tzPNTi5/xPDqxNecZ0kpl/NYw+oipzyrUWRCjRJ4HyrwzQfIxoM/b0Kos4X06l2U5Y7UJqOSrhTLp1s38YrcBU467unzhvOLMnNnTs04Shpnt61V12bGoP3SKv5MTFuk/sGK4T25E04k= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697726409; 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; 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a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697726147; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CDLdKyNP9No2g22DSvv6irP4xqho45GAssWca3qUyLc=; b=R807o3l7FD287/E/VCZDNIOGj4TsNj4qczQCuTJc/LCDMf+TfuJwX7esd3O9TiHdNuaYnO Qubo8edQVyxR7eW3OpKyBOjQkRFK86sQoS4CFfCUK4sDSPBKGsWjtKIGrPi0ZQzXydixyw JJdkzzt37qRRAikuTMZtNVpauAAS8oA= X-MC-Unique: WgrF4veDMiWUiv-xOxkXJQ-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 17/18] vdpa: use shadow_data instead of first device v->shadow_vqs_enabled Date: Thu, 19 Oct 2023 16:34:54 +0200 Message-Id: <20231019143455.2377694-18-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726409825100001 Content-Type: text/plain; charset="utf-8" Previously we trusted vq_index =3D=3D 0 will be started first. By the end of this series this might not be true, so let's check proper shadow_data for this. --- hw/virtio/vhost-vdpa.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index bfbe4673af..1f2ef953f6 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -802,7 +802,7 @@ static int vhost_vdpa_set_features(struct vhost_dev *de= v, return 0; } =20 - if (v->shadow_vqs_enabled) { + if (v->shared->shadow_data) { if ((v->acked_features ^ features) =3D=3D BIT_ULL(VHOST_F_LOG_ALL)= ) { /* * QEMU is just trying to enable or disable logging. SVQ handl= es @@ -1353,7 +1353,7 @@ static int vhost_vdpa_set_log_base(struct vhost_dev *= dev, uint64_t base, struct vhost_log *log) { struct vhost_vdpa *v =3D dev->opaque; - if (v->shadow_vqs_enabled || !vhost_vdpa_first_dev(dev)) { + if (v->shared->shadow_data || !vhost_vdpa_first_dev(dev)) { return 0; } =20 --=20 2.39.3 From nobody Wed Nov 27 15:53:59 2024 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=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1697726226; cv=none; d=zohomail.com; s=zohoarc; b=LTZmMT5JJfaMvxdoPjMjs8s2hdkUYhy6/N1n/uMF4rurvRiPI59VuEPgxGBAjDU/e6gXc2Go8RlPMcbktYx+taXR1TCKzoegclJXvdpZrQ47Xc71AJJpGf2LBzuNbHNZaUl9EOiq5dREGsojShLtz2cscA5UfxET7aULBRPcJok= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1697726226; 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=ZYh//+UpSrN6kDA92jv+M1BuDh+/qH7Cfxyqscd0nfA=; b=bkjS8uSX+fIWKDraEBiXIdR9/JYSrABiQitZhrGTga8kpcthD1sFpYgCu4zX0i3DN1Mut9tR/AqC2KOE6igQXuoyYPkY6lrQBHIV15xVeb+h9ZzTVb+3LZNCYdfFchgemT8nNGRO/8e5epe6csvJu+RrGA/NzwL9UDeZvsEvFl0= 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 1697726226391753.2058497754914; Thu, 19 Oct 2023 07:37:06 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qtU88-0007Rt-B3; Thu, 19 Oct 2023 10:36:08 -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 1qtU84-0007P5-MR for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:36:04 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qtU82-0000Uy-6w for qemu-devel@nongnu.org; Thu, 19 Oct 2023 10:36:03 -0400 Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-104-APuC0QntNnWAhJdPgizY2Q-1; Thu, 19 Oct 2023 10:35:45 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.rdu2.redhat.com [10.11.54.8]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 370A08EB36A; Thu, 19 Oct 2023 14:35:45 +0000 (UTC) Received: from eperezma.remote.csb (unknown [10.39.192.162]) by smtp.corp.redhat.com (Postfix) with ESMTP id 06523C15BB8; Thu, 19 Oct 2023 14:35:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1697726161; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=ZYh//+UpSrN6kDA92jv+M1BuDh+/qH7Cfxyqscd0nfA=; b=D1DoiW4o8zY5kZdSJ15PSRjixHmuXr05H38zsGulvRT9cnxXQz1d7mzI3spYP2uJT3EO2j 95n41BXdS9dVTh9XqghXF/VlcQuzVulI7LpaIV+zl4mrICBZhiNoKicYhmj8D+YTgcQ3O+ iDJhR13gj4XlmiRmwFXnBYqtb4cWUvw= X-MC-Unique: APuC0QntNnWAhJdPgizY2Q-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Cc: Shannon , Parav Pandit , Stefano Garzarella , "Michael S. Tsirkin" , yin31149@gmail.com, Jason Wang , Yajun Wu , Zhu Lingshan , Lei Yang , Dragos Tatulea , Juan Quintela , Laurent Vivier , si-wei.liu@oracle.com, Gautam Dawar Subject: [RFC PATCH 18/18] virtio_net: register incremental migration handlers Date: Thu, 19 Oct 2023 16:34:55 +0200 Message-Id: <20231019143455.2377694-19-eperezma@redhat.com> In-Reply-To: <20231019143455.2377694-1-eperezma@redhat.com> References: <20231019143455.2377694-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.8 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=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com 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, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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 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 @redhat.com) X-ZM-MESSAGEID: 1697726227220100001 This way VirtIONet can detect when the incoming migration starts. While registering in the backend (nc->peer) seems more logical, we need nic dma address space, and we cannot get it from the backend. Signed-off-by: Eugenio P=C3=A9rez --- This could be done in vhost_vdpa or VirtIODevice struct, but future series will add state restore through CVQ so it's easier to start in VirtIONEt directly. If we need to make this more generic, we can move to VirtIODevice and expose callbacks from VirtIONet class. Also, the pointer may not be the best id, but there are not a lot of things initialized in n. --- hw/net/virtio-net.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 29e33ea5ed..470338fa7c 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -38,6 +38,7 @@ #include "qapi/qapi-events-migration.h" #include "hw/virtio/virtio-access.h" #include "migration/misc.h" +#include "migration/register.h" #include "standard-headers/linux/ethtool.h" #include "sysemu/sysemu.h" #include "trace.h" @@ -3808,9 +3809,27 @@ static void virtio_net_device_unrealize(DeviceState = *dev) virtio_cleanup(vdev); } =20 +static int virtio_net_load_setup(QEMUFile *f, void *opaque) +{ + VirtIONet *n =3D opaque; + NetClientState *nc =3D qemu_get_subqueue(n->nic, 0); + + if (nc->peer->info->load_setup) { + return nc->peer->info->load_setup(nc->peer, n->nic); + } + + return 0; +} + +static const SaveVMHandlers savevm_virtio_net_handlers =3D { + .load_setup =3D virtio_net_load_setup, +}; + + static void virtio_net_instance_init(Object *obj) { VirtIONet *n =3D VIRTIO_NET(obj); + g_autoptr(GString) id =3D g_string_new(NULL); =20 /* * The default config_size is sizeof(struct virtio_net_config). @@ -3822,6 +3841,10 @@ static void virtio_net_instance_init(Object *obj) DEVICE(n)); =20 ebpf_rss_init(&n->ebpf_rss); + + g_string_printf(id, "%p", n); + register_savevm_live(id->str, VMSTATE_INSTANCE_ID_ANY, 1, + &savevm_virtio_net_handlers, n); } =20 static int virtio_net_pre_save(void *opaque) --=20 2.39.3