diff options
| author | Jason Wang | 2020-09-07 12:49:03 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin | 2020-09-29 08:14:29 +0200 |
| commit | a5bd05800f8659851d9d0a1546726e16b7da9db3 (patch) | |
| tree | 5188269fbdeb733e563d73f743dc374f5404c825 /include/hw/virtio | |
| parent | vhost: switch to use IOTLB v2 format (diff) | |
| download | qemu-a5bd05800f8659851d9d0a1546726e16b7da9db3.tar.gz qemu-a5bd05800f8659851d9d0a1546726e16b7da9db3.tar.xz qemu-a5bd05800f8659851d9d0a1546726e16b7da9db3.zip | |
vhost-vdpa: batch updating IOTLB mappings
To speed up the memory mapping updating between vhost-vDPA and vDPA
device driver, this patch passes the IOTLB batching flags via IOTLB
API. Two new flags was introduced, VHOST_IOTLB_BATCH_BEGIN is a hint
that a bathced IOTLB updating may be initiated from the
userspace. VHOST_IOTLB_BATCH_END is a hint that userspace has finished
the updating:
VHOST_IOTLB_BATCH_BEGIN
VHOST_IOTLB_UPDATE/VHOST_IOTLB_INVALIDATE
...
VHOST_IOTLB_BATCH_END
Vhost-vDPA can then know that all mappings has been set and can do
optimization like passing all the mappings to the vDPA device driver.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20200907104903.31551-4-jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/virtio')
| -rw-r--r-- | include/hw/virtio/vhost-vdpa.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h index 6455663388..9b81a409da 100644 --- a/include/hw/virtio/vhost-vdpa.h +++ b/include/hw/virtio/vhost-vdpa.h @@ -18,6 +18,7 @@ typedef struct vhost_vdpa { int device_fd; uint32_t msg_type; MemoryListener listener; + struct vhost_dev *dev; } VhostVDPA; extern AddressSpace address_space_memory; |