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| author | Eugenio Pérez <eperezma@redhat.com> | 2023-12-21 18:43:15 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-12-26 04:51:07 -0500 |
| commit | f12b2498e561ddf9ab45940deb15ef1bb046f699 (patch) | |
| tree | 5af62f8c82d636448702370d987a7458e0794310 /include | |
| parent | e36b9992fafe3a4f1e2a7819d4b3df171acaa960 (diff) | |
| download | qemu-f12b2498e561ddf9ab45940deb15ef1bb046f699.zip qemu-f12b2498e561ddf9ab45940deb15ef1bb046f699.tar.gz qemu-f12b2498e561ddf9ab45940deb15ef1bb046f699.tar.bz2 | |
vdpa: move file descriptor to vhost_vdpa_shared
Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stopping the VM at the source. The main goal is to reduce the
downtime.
However, the destination QEMU is unaware of which vhost_vdpa device will
register its memory_listener. If the source guest has CVQ enabled, it
will be the CVQ device. Otherwise, it will be the first one.
Move the file descriptor to VhostVDPAShared so all vhost_vdpa can use
it, rather than always in the first / last vhost_vdpa.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231221174322.3130442-7-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/virtio/vhost-vdpa.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 01e0f25..796a180 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -32,6 +32,7 @@ typedef struct VhostVDPAHostNotifier { /* Info shared by all vhost_vdpa device models */ typedef struct vhost_vdpa_shared { + int device_fd; struct vhost_vdpa_iova_range iova_range; /* IOVA mapping used by the Shadow Virtqueue */ @@ -42,7 +43,6 @@ typedef struct vhost_vdpa_shared { } VhostVDPAShared; typedef struct vhost_vdpa { - int device_fd; int index; uint32_t msg_type; bool iotlb_batch_begin_sent; |