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authorEugenio Pérez <eperezma@redhat.com>2022-12-15 12:31:42 +0100
committerMichael S. Tsirkin <mst@redhat.com>2022-12-21 06:35:28 -0500
commit7f211a28fd5482f76583988beecd8ee61588d45e (patch)
tree4e7ee840854e50a68d01b75f5dbc2abaea9fd641 /net
parentcd831ed5c4add8ed6ee980c3645b241cbef5130f (diff)
vdpa: store x-svq parameter in VhostVDPAState
CVQ can be shadowed two ways: - Device has x-svq=on parameter (current way) - The device can isolate CVQ in its own vq group QEMU needs to check for the second condition dynamically, because CVQ index is not known before the driver ack the features. Since this is dynamic, the CVQ isolation could vary with different conditions, making it possible to go from "not isolated group" to "isolated". Saving the cmdline parameter in an extra field so we never disable CVQ SVQ in case the device was started with x-svq cmdline. Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Acked-by: Jason Wang <jasowang@redhat.com> Message-Id: <20221215113144.322011-11-eperezma@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'net')
-rw-r--r--net/vhost-vdpa.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index a592ee07ec..bff72717d0 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -38,6 +38,8 @@ typedef struct VhostVDPAState {
void *cvq_cmd_out_buffer;
virtio_net_ctrl_ack *status;
+ /* The device always have SVQ enabled */
+ bool always_svq;
bool started;
} VhostVDPAState;
@@ -568,6 +570,7 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer,
s->vhost_vdpa.device_fd = vdpa_device_fd;
s->vhost_vdpa.index = queue_pair_index;
+ s->always_svq = svq;
s->vhost_vdpa.shadow_vqs_enabled = svq;
s->vhost_vdpa.iova_range = iova_range;
s->vhost_vdpa.iova_tree = iova_tree;