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Tsirkin" , Cindy Lu , Jason Wang Subject: [RFC PATCH v9 05/23] vhost: Add ShadowVirtQueueStart operation Date: Wed, 6 Jul 2022 20:39:50 +0200 Message-Id: <20220706184008.1649478-6-eperezma@redhat.com> In-Reply-To: <20220706184008.1649478-1-eperezma@redhat.com> References: <20220706184008.1649478-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 2.85 on 10.11.54.7 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: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.082, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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" X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1657133184572100001 It allows to run commands at SVQ start. Signed-off-by: Eugenio P=C3=A9rez --- hw/virtio/vhost-shadow-virtqueue.h | 18 +++++++++++++++++- hw/virtio/vhost-shadow-virtqueue.c | 8 +++++++- hw/virtio/vhost-vdpa.c | 17 ++++++++++++++++- 3 files changed, 40 insertions(+), 3 deletions(-) diff --git a/hw/virtio/vhost-shadow-virtqueue.h b/hw/virtio/vhost-shadow-vi= rtqueue.h index c132c994e9..91c31715d9 100644 --- a/hw/virtio/vhost-shadow-virtqueue.h +++ b/hw/virtio/vhost-shadow-virtqueue.h @@ -15,6 +15,14 @@ #include "standard-headers/linux/vhost_types.h" #include "hw/virtio/vhost-iova-tree.h" =20 +typedef struct VhostShadowVirtqueue VhostShadowVirtqueue; +typedef int (*ShadowVirtQueueStart)(VhostShadowVirtqueue *svq, + void *opaque); + +typedef struct VhostShadowVirtqueueOps { + ShadowVirtQueueStart start; +} VhostShadowVirtqueueOps; + /* Shadow virtqueue to relay notifications */ typedef struct VhostShadowVirtqueue { /* Shadow vring */ @@ -59,6 +67,12 @@ typedef struct VhostShadowVirtqueue { */ uint16_t *desc_next; =20 + /* Caller callbacks */ + const VhostShadowVirtqueueOps *ops; + + /* Caller callbacks opaque */ + void *ops_opaque; + /* Next head to expose to the device */ uint16_t shadow_avail_idx; =20 @@ -85,7 +99,9 @@ void vhost_svq_start(VhostShadowVirtqueue *svq, VirtIODev= ice *vdev, VirtQueue *vq); void vhost_svq_stop(VhostShadowVirtqueue *svq); =20 -VhostShadowVirtqueue *vhost_svq_new(VhostIOVATree *iova_tree); +VhostShadowVirtqueue *vhost_svq_new(VhostIOVATree *iova_tree, + const VhostShadowVirtqueueOps *ops, + void *ops_opaque); =20 void vhost_svq_free(gpointer vq); G_DEFINE_AUTOPTR_CLEANUP_FUNC(VhostShadowVirtqueue, vhost_svq_free); diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-vi= rtqueue.c index 2939f4a243..be64e0b85c 100644 --- a/hw/virtio/vhost-shadow-virtqueue.c +++ b/hw/virtio/vhost-shadow-virtqueue.c @@ -626,12 +626,16 @@ void vhost_svq_stop(VhostShadowVirtqueue *svq) * shadow methods and file descriptors. * * @iova_tree: Tree to perform descriptors translations + * @ops: SVQ owner callbacks + * @ops_opaque: ops opaque pointer * * Returns the new virtqueue or NULL. * * In case of error, reason is reported through error_report. */ -VhostShadowVirtqueue *vhost_svq_new(VhostIOVATree *iova_tree) +VhostShadowVirtqueue *vhost_svq_new(VhostIOVATree *iova_tree, + const VhostShadowVirtqueueOps *ops, + void *ops_opaque) { g_autofree VhostShadowVirtqueue *svq =3D g_new0(VhostShadowVirtqueue, = 1); int r; @@ -653,6 +657,8 @@ VhostShadowVirtqueue *vhost_svq_new(VhostIOVATree *iova= _tree) event_notifier_init_fd(&svq->svq_kick, VHOST_FILE_UNBIND); event_notifier_set_handler(&svq->hdev_call, vhost_svq_handle_call); svq->iova_tree =3D iova_tree; + svq->ops =3D ops; + svq->ops_opaque =3D ops_opaque; return g_steal_pointer(&svq); =20 err_init_hdev_call: diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index de76128030..69cfaf05d6 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -418,7 +418,8 @@ static int vhost_vdpa_init_svq(struct vhost_dev *hdev, = struct vhost_vdpa *v, =20 shadow_vqs =3D g_ptr_array_new_full(hdev->nvqs, vhost_svq_free); for (unsigned n =3D 0; n < hdev->nvqs; ++n) { - g_autoptr(VhostShadowVirtqueue) svq =3D vhost_svq_new(v->iova_tree= ); + g_autoptr(VhostShadowVirtqueue) svq =3D vhost_svq_new(v->iova_tree= , NULL, + NULL); =20 if (unlikely(!svq)) { error_setg(errp, "Cannot create svq %u", n); @@ -1122,6 +1123,20 @@ static int vhost_vdpa_dev_start(struct vhost_dev *de= v, bool started) if (unlikely(r)) { return r; } + + if (v->shadow_vqs_enabled) { + for (unsigned i =3D 0; i < v->shadow_vqs->len; ++i) { + VhostShadowVirtqueue *svq =3D g_ptr_array_index(v->shadow_= vqs, + i); + if (svq->ops) { + r =3D svq->ops->start(svq, svq->ops_opaque); + if (unlikely(r)) { + return r; + } + } + } + } + vhost_vdpa_set_vring_ready(dev); } else { vhost_vdpa_reset_device(dev); --=20 2.31.1