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Tsirkin" To: qemu-devel@nongnu.org Cc: Peter Maydell , Eugenio =?utf-8?B?UMOpcmV6?= , Lei Yang , Laurent Vivier , Jason Wang Subject: [PULL 19/53] vdpa: stop all svq on device deletion Message-ID: <20230302082343.560446-20-mst@redhat.com> References: <20230302082343.560446-1-mst@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20230302082343.560446-1-mst@redhat.com> X-Mailer: git-send-email 2.27.0.106.g8ac3dc51b1 X-Mutt-Fcc: =sent 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=mst@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_H2=-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: 1677745566827100001 From: Eugenio P=C3=A9rez Not stopping them leave the device in a bad state when virtio-net fronted device is unplugged with device_del monitor command. This is not triggable in regular poweroff or qemu forces shutdown because cleanup is called right after vhost_vdpa_dev_start(false). But devices hot unplug does not call vdpa device cleanups. This lead to all the vhost_vdpa devices without stop the SVQ but the last. Fix it and clean the code, making it symmetric with vhost_vdpa_svqs_start. Fixes: dff4426fa656 ("vhost: Add Shadow VirtQueue kick forwarding capabilit= ies") Reported-by: Lei Yang Signed-off-by: Eugenio P=C3=A9rez Message-Id: <20230209170004.899472-1-eperezma@redhat.com> Tested-by: Laurent Vivier Acked-by: Jason Wang --- hw/virtio/vhost-vdpa.c | 17 ++--------------- 1 file changed, 2 insertions(+), 15 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index 542e003101..df3a1e92ac 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -689,26 +689,11 @@ static int vhost_vdpa_get_device_id(struct vhost_dev = *dev, return ret; } =20 -static void vhost_vdpa_reset_svq(struct vhost_vdpa *v) -{ - if (!v->shadow_vqs_enabled) { - return; - } - - for (unsigned i =3D 0; i < v->shadow_vqs->len; ++i) { - VhostShadowVirtqueue *svq =3D g_ptr_array_index(v->shadow_vqs, i); - vhost_svq_stop(svq); - } -} - static int vhost_vdpa_reset_device(struct vhost_dev *dev) { - struct vhost_vdpa *v =3D dev->opaque; int ret; uint8_t status =3D 0; =20 - vhost_vdpa_reset_svq(v); - ret =3D vhost_vdpa_call(dev, VHOST_VDPA_SET_STATUS, &status); trace_vhost_vdpa_reset_device(dev, status); return ret; @@ -1100,6 +1085,8 @@ static void vhost_vdpa_svqs_stop(struct vhost_dev *de= v) =20 for (unsigned i =3D 0; i < v->shadow_vqs->len; ++i) { VhostShadowVirtqueue *svq =3D g_ptr_array_index(v->shadow_vqs, i); + + vhost_svq_stop(svq); vhost_vdpa_svq_unmap_rings(dev, svq); =20 event_notifier_cleanup(&svq->hdev_kick); --=20 MST