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bh=eDk6ORb0CFQX0SjnjEy5Mjgwnx7Of5HDLZ0WqbSxD4w=; b=c9qJE3yIss8CfECwZSLXDq4OEY8M2KTVbfziJFGOTR0jDne8v41O0fn/HjVLvg1LDIphYm 95WVYwm8kMqAtsIR/2LC9oaJACN8Ze9bR9ugmftCD7/7BPUBUSaw4WdpPmAkNAAzU0omGX pxCaFJPd01B0F9crQ0Jx7WV6gFWuEAY= X-MC-Unique: OB_nGhGKP5y1vWnP045JCA-1 From: =?UTF-8?q?Eugenio=20P=C3=A9rez?= To: qemu-devel@nongnu.org Subject: [RFC v3 14/29] vhost: add vhost_has_limited_iova_range Date: Wed, 19 May 2021 18:28:48 +0200 Message-Id: <20210519162903.1172366-15-eperezma@redhat.com> In-Reply-To: <20210519162903.1172366-1-eperezma@redhat.com> References: <20210519162903.1172366-1-eperezma@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eperezma@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=eperezma@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.39, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Parav Pandit , "Michael S. Tsirkin" , Jason Wang , Juan Quintela , Markus Armbruster , virtualization@lists.linux-foundation.org, Harpreet Singh Anand , Xiao W Wang , Stefan Hajnoczi , Eli Cohen , Michael Lilja , Stefano Garzarella Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Signed-off-by: Eugenio P=C3=A9rez --- include/hw/virtio/vhost.h | 5 +++++ hw/virtio/vhost.c | 17 +++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h index 67cedf83da..c97a4c0017 100644 --- a/include/hw/virtio/vhost.h +++ b/include/hw/virtio/vhost.h @@ -88,6 +88,10 @@ struct vhost_dev { bool log_enabled; bool shadow_vqs_enabled; uint64_t log_size; + struct { + hwaddr first; + hwaddr last; + } iova_range; VhostShadowVirtqueue **shadow_vqs; Error *migration_blocker; const VhostOps *vhost_ops; @@ -129,6 +133,7 @@ uint64_t vhost_get_features(struct vhost_dev *hdev, con= st int *feature_bits, void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits, uint64_t features); bool vhost_has_free_slot(void); +bool vhost_has_limited_iova_range(const struct vhost_dev *hdev); =20 int vhost_net_set_backend(struct vhost_dev *hdev, struct vhost_vring_file *file); diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 9c9c63345b..333877ca3b 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -1386,6 +1386,18 @@ int vhost_dev_init(struct vhost_dev *hdev, void *opa= que, goto fail; } =20 + if (hdev->vhost_ops->vhost_get_iova_range) { + r =3D hdev->vhost_ops->vhost_get_iova_range(hdev, + &hdev->iova_range.first, + &hdev->iova_range.last); + if (unlikely(r !=3D 0)) { + error_report("Can't request IOVA range"); + goto fail; + } + } else { + hdev->iova_range.last =3D (hwaddr)-1; + } + for (i =3D 0; i < hdev->nvqs; ++i, ++n_initialized_vqs) { r =3D vhost_virtqueue_init(hdev, hdev->vqs + i, hdev->vq_index + i= ); if (r < 0) { @@ -1622,6 +1634,11 @@ void vhost_virtqueue_mask(struct vhost_dev *hdev, Vi= rtIODevice *vdev, int n, } } =20 +bool vhost_has_limited_iova_range(const struct vhost_dev *hdev) +{ + return hdev->iova_range.first || hdev->iova_range.last !=3D HWADDR_MAX; +} + uint64_t vhost_get_features(struct vhost_dev *hdev, const int *feature_bit= s, uint64_t features) { --=20 2.27.0