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Tsirkin" , Cindy Lu , Cornelia Huck , Liuxiangdong , Jason Wang , Stefan Hajnoczi , "Gonglei (Arei)" , Gautam Dawar Subject: [RFC PATCH 08/12] vdpa: Add vhost_vdpa_start_control_svq Date: Sat, 16 Jul 2022 13:34:03 +0200 Message-Id: <20220716113407.2730331-9-eperezma@redhat.com> In-Reply-To: <20220716113407.2730331-1-eperezma@redhat.com> References: <20220716113407.2730331-1-eperezma@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.11.54.2 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" As a first step we only enable CVQ first than others. Future patches add state restore. Signed-off-by: Eugenio Pérez --- net/vhost-vdpa.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 986e6414b4..211bd0468b 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -334,6 +334,18 @@ static bool vhost_vdpa_net_cvq_map_elem(VhostVDPAState *s, return true; } +static int vhost_vdpa_start_control_svq(struct vhost_vdpa *v) +{ + struct vhost_vring_state state = { + .index = v->dev->vq_index, + .num = 1, + }; + int r; + + r = ioctl(v->device_fd, VHOST_VDPA_SET_VRING_ENABLE, &state); + return r < 0 ? -errno : r; +} + /** * Do not forward commands not supported by SVQ. Otherwise, the device could * accept it and qemu would not know how to update the device model. @@ -493,6 +505,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, vhost_vdpa_net_cvq_cmd_page_len()); memset(s->cvq_cmd_in_buffer, 0, vhost_vdpa_net_cvq_cmd_page_len()); + s->vhost_vdpa.start_op = vhost_vdpa_start_control_svq; s->vhost_vdpa.shadow_vq_ops = &vhost_vdpa_net_svq_ops; s->vhost_vdpa.shadow_vq_ops_opaque = s; error_setg(&s->vhost_vdpa.migration_blocker, -- 2.31.1