diff options
| author | Eugenio Pérez <eperezma@redhat.com> | 2022-07-20 08:59:40 +0200 |
|---|---|---|
| committer | Jason Wang <jasowang@redhat.com> | 2022-07-20 16:58:08 +0800 |
| commit | 463ba1e3b8cf080812895c5f26d95d8d7db2e692 (patch) | |
| tree | 1c3ff4cbb4f335f9ff5c7f3256f134bb85b6a06b /include | |
| parent | e966c0b781aebabd2c0f5eef91678f08ce1d068c (diff) | |
| download | qemu-463ba1e3b8cf080812895c5f26d95d8d7db2e692.zip qemu-463ba1e3b8cf080812895c5f26d95d8d7db2e692.tar.gz qemu-463ba1e3b8cf080812895c5f26d95d8d7db2e692.tar.bz2 | |
vdpa: Export vhost_vdpa_dma_map and unmap calls
Shadow CVQ will copy buffers on qemu VA, so we avoid TOCTOU attacks from
the guest that could set a different state in qemu device model and vdpa
device.
To do so, it needs to be able to map these new buffers to the device.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/virtio/vhost-vdpa.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index a29dbb3..7214eb4 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -39,4 +39,8 @@ typedef struct vhost_vdpa { VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX]; } VhostVDPA; +int vhost_vdpa_dma_map(struct vhost_vdpa *v, hwaddr iova, hwaddr size, + void *vaddr, bool readonly); +int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, hwaddr iova, hwaddr size); + #endif |