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| author | Changpeng Liu <changpeng.liu@intel.com> | 2019-01-16 13:19:30 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-02-05 10:58:33 -0500 |
| commit | caa1ee43131c060347b32893abd41fe4865eaa2e (patch) | |
| tree | a6ec75423ca14fb5ad7e2c9b516ec919a6eab9e0 /hw/block/vhost-user-blk.c | |
| parent | a56de056c91f87e1e8569a32f8d3513b5ae1d7ec (diff) | |
vhost-user-blk: add discard/write zeroes features support
Linux commit 1f23816b8 "virtio_blk: add discard and write zeroes support"
added the support in the Guest kernel, while here also enable the features
support with vhost-user-blk driver. Also enable the test example utility
with DISCARD and WRITE ZEROES commands.
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/block/vhost-user-blk.c')
| -rw-r--r-- | hw/block/vhost-user-blk.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/block/vhost-user-blk.c b/hw/block/vhost-user-blk.c index c3af28fad4..44ac814016 100644 --- a/hw/block/vhost-user-blk.c +++ b/hw/block/vhost-user-blk.c @@ -38,6 +38,8 @@ static const int user_feature_bits[] = { VIRTIO_BLK_F_RO, VIRTIO_BLK_F_FLUSH, VIRTIO_BLK_F_CONFIG_WCE, + VIRTIO_BLK_F_DISCARD, + VIRTIO_BLK_F_WRITE_ZEROES, VIRTIO_F_VERSION_1, VIRTIO_RING_F_INDIRECT_DESC, VIRTIO_RING_F_EVENT_IDX, @@ -204,6 +206,8 @@ static uint64_t vhost_user_blk_get_features(VirtIODevice *vdev, virtio_add_feature(&features, VIRTIO_BLK_F_BLK_SIZE); virtio_add_feature(&features, VIRTIO_BLK_F_FLUSH); virtio_add_feature(&features, VIRTIO_BLK_F_RO); + virtio_add_feature(&features, VIRTIO_BLK_F_DISCARD); + virtio_add_feature(&features, VIRTIO_BLK_F_WRITE_ZEROES); if (s->config_wce) { virtio_add_feature(&features, VIRTIO_BLK_F_CONFIG_WCE); |