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| author | Eugenio Pérez <eperezma@redhat.com> | 2025-05-22 10:58:33 -0400 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2025-06-02 14:29:15 -0400 |
| commit | 55cf1d4f10160e37440d9e727a160ac1141bbb53 (patch) | |
| tree | 3553524d5a1b5b752508f6c729eeab199e4d26e8 | |
| parent | a9403bfcd93025df7b1924d0cf34fbc408955b33 (diff) | |
| download | qemu-55cf1d4f10160e37440d9e727a160ac1141bbb53.zip qemu-55cf1d4f10160e37440d9e727a160ac1141bbb53.tar.gz qemu-55cf1d4f10160e37440d9e727a160ac1141bbb53.tar.bz2 | |
vdpa: check for iova tree initialized at net_client_start
To map the guest memory while it is migrating we need to create the
iova_tree, as long as the destination uses x-svq=on. Checking to not
override it.
The function vhost_vdpa_net_client_stop clear it if the device is
stopped. If the guest starts the device again, the iova tree is
recreated by vhost_vdpa_net_data_start_first or vhost_vdpa_net_cvq_start
if needed, so old behavior is kept.
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Si-Wei Liu <si-wei.liu@oracle.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Message-Id: <20250522145839.59974-2-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | net/vhost-vdpa.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 7ca8b46..decb826 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -366,7 +366,9 @@ static void vhost_vdpa_net_data_start_first(VhostVDPAState *s) migration_add_notifier(&s->migration_state, vdpa_net_migration_state_notifier); - if (v->shadow_vqs_enabled) { + + /* iova_tree may be initialized by vhost_vdpa_net_load_setup */ + if (v->shadow_vqs_enabled && !v->shared->iova_tree) { v->shared->iova_tree = vhost_iova_tree_new(v->shared->iova_range.first, v->shared->iova_range.last); } |