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bh=hpL+WzmcRefiHk4+5YNb2+iLVYt8rr8sZxmtKMXuM+4=; b=XLqS5eGiTBRUPBOxePoa0sKOUMlIGc+HXG9PkUzxcx/POYzWm2e5HJbphjj6MR6D1qFb7E 7t9h8pjVpkwdT7FNDM4spL8kAc70nJX2pzhVjgfBwrXQBi3g7KroRaDeqAzUiXP8E+buDY +8kq1JTc2gqrFjNkjUnkX0NjerY8e80= X-MC-Unique: 8GZvU4BdOiGao3uRixSSCg-1 From: Jason Wang To: qemu-devel@nongnu.org, peter.maydell@linaro.org Cc: =?UTF-8?q?Eugenio=20P=C3=A9rez?= , Lei Yang , Jason Wang Subject: [PULL 05/21] vdpa: Make SVQ vring unmapping return void Date: Fri, 2 Sep 2022 14:41:22 +0800 Message-Id: <20220902064138.56468-6-jasowang@redhat.com> In-Reply-To: <20220902064138.56468-1-jasowang@redhat.com> References: <20220902064138.56468-1-jasowang@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=jasowang@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, 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_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: 1662101707961100001 From: Eugenio P=C3=A9rez Nothing actually reads the return value, but an error in cleaning some entries could cause device stop to abort, making a restart impossible. Better ignore explicitely the return value. Reported-by: Lei Yang Fixes: 34e3c94eda ("vdpa: Add custom IOTLB translations to SVQ") Signed-off-by: Eugenio P=C3=A9rez Acked-by: Jason Wang Signed-off-by: Jason Wang --- hw/virtio/vhost-vdpa.c | 32 ++++++++++---------------------- 1 file changed, 10 insertions(+), 22 deletions(-) diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c index e16e0e2..e208dd0 100644 --- a/hw/virtio/vhost-vdpa.c +++ b/hw/virtio/vhost-vdpa.c @@ -884,7 +884,7 @@ static int vhost_vdpa_svq_set_fds(struct vhost_dev *dev, /** * Unmap a SVQ area in the device */ -static bool vhost_vdpa_svq_unmap_ring(struct vhost_vdpa *v, +static void vhost_vdpa_svq_unmap_ring(struct vhost_vdpa *v, const DMAMap *needle) { const DMAMap *result =3D vhost_iova_tree_find_iova(v->iova_tree, needl= e); @@ -893,38 +893,33 @@ static bool vhost_vdpa_svq_unmap_ring(struct vhost_vd= pa *v, =20 if (unlikely(!result)) { error_report("Unable to find SVQ address to unmap"); - return false; + return; } =20 size =3D ROUND_UP(result->size, qemu_real_host_page_size()); r =3D vhost_vdpa_dma_unmap(v, result->iova, size); if (unlikely(r < 0)) { error_report("Unable to unmap SVQ vring: %s (%d)", g_strerror(-r),= -r); - return false; + return; } =20 vhost_iova_tree_remove(v->iova_tree, *result); - return r =3D=3D 0; } =20 -static bool vhost_vdpa_svq_unmap_rings(struct vhost_dev *dev, +static void vhost_vdpa_svq_unmap_rings(struct vhost_dev *dev, const VhostShadowVirtqueue *svq) { DMAMap needle =3D {}; struct vhost_vdpa *v =3D dev->opaque; struct vhost_vring_addr svq_addr; - bool ok; =20 vhost_svq_get_vring_addr(svq, &svq_addr); =20 needle.translated_addr =3D svq_addr.desc_user_addr; - ok =3D vhost_vdpa_svq_unmap_ring(v, &needle); - if (unlikely(!ok)) { - return false; - } + vhost_vdpa_svq_unmap_ring(v, &needle); =20 needle.translated_addr =3D svq_addr.used_user_addr; - return vhost_vdpa_svq_unmap_ring(v, &needle); + vhost_vdpa_svq_unmap_ring(v, &needle); } =20 /** @@ -1095,26 +1090,22 @@ err: return false; } =20 -static bool vhost_vdpa_svqs_stop(struct vhost_dev *dev) +static void vhost_vdpa_svqs_stop(struct vhost_dev *dev) { struct vhost_vdpa *v =3D dev->opaque; =20 if (!v->shadow_vqs) { - return true; + return; } =20 for (unsigned i =3D 0; i < v->shadow_vqs->len; ++i) { VhostShadowVirtqueue *svq =3D g_ptr_array_index(v->shadow_vqs, i); - bool ok =3D vhost_vdpa_svq_unmap_rings(dev, svq); - if (unlikely(!ok)) { - return false; - } + vhost_vdpa_svq_unmap_rings(dev, svq); } =20 if (v->migration_blocker) { migrate_del_blocker(v->migration_blocker); } - return true; } =20 static int vhost_vdpa_dev_start(struct vhost_dev *dev, bool started) @@ -1131,10 +1122,7 @@ static int vhost_vdpa_dev_start(struct vhost_dev *de= v, bool started) } vhost_vdpa_set_vring_ready(dev); } else { - ok =3D vhost_vdpa_svqs_stop(dev); - if (unlikely(!ok)) { - return -1; - } + vhost_vdpa_svqs_stop(dev); vhost_vdpa_host_notifiers_uninit(dev, dev->nvqs); } =20 --=20 2.7.4