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| author | Eugenio Pérez <eperezma@redhat.com> | 2023-06-02 16:38:52 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-06-26 09:50:00 -0400 |
| commit | 8bc0049eadafb984d305c847cedff550b58e5fc0 (patch) | |
| tree | 693334fe01642881fd1ab462ce6b42cb96c65f05 /net | |
| parent | e0001297eb2f8569e950e55dbda8ad686e4155fb (diff) | |
| download | qemu-8bc0049eadafb984d305c847cedff550b58e5fc0.zip qemu-8bc0049eadafb984d305c847cedff550b58e5fc0.tar.gz qemu-8bc0049eadafb984d305c847cedff550b58e5fc0.tar.bz2 | |
vdpa: do not block migration if device has cvq and x-svq=on
It was a mistake to forbid in all cases, as SVQ is already able to send
all the CVQ messages before start forwarding data vqs. It actually
caused a regression, making impossible to migrate device previously
migratable.
Fixes: 36e4647247f2 ("vdpa: add vhost_vdpa_net_valid_svq_features")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230602143854.1879091-2-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/vhost-vdpa.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 46778d5..4345f1e 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -915,13 +915,16 @@ static NetClientState *net_vhost_vdpa_init(NetClientState *peer, s->cvq_isolated = cvq_isolated; /* - * TODO: We cannot migrate devices with CVQ as there is no way to set - * the device state (MAC, MQ, etc) before starting the datapath. + * TODO: We cannot migrate devices with CVQ and no x-svq enabled as + * there is no way to set the device state (MAC, MQ, etc) before + * starting the datapath. * * Migration blocker ownership now belongs to s->vhost_vdpa. */ - error_setg(&s->vhost_vdpa.migration_blocker, - "net vdpa cannot migrate with CVQ feature"); + if (!svq) { + error_setg(&s->vhost_vdpa.migration_blocker, + "net vdpa cannot migrate with CVQ feature"); + } } ret = vhost_vdpa_add(nc, (void *)&s->vhost_vdpa, queue_pair_index, nvqs); if (ret) { |