diff options
| author | Michael S. Tsirkin <mst@redhat.com> | 2010-01-10 13:52:53 +0200 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2010-01-11 13:40:59 -0600 |
| commit | 8172539d21a03e982aa7f139ddc1607dc1422045 (patch) | |
| tree | 67ceb2ca2ea245060d9285623e26e3a42b3cdc1a /hw/virtio-blk.c | |
| parent | 704a76fcd24372a683652651b4597f6654084975 (diff) | |
virtio: add features as qdev properties
Add feature bits as properties to virtio. This makes it possible to e.g. define
machine without indirect buffer support, which is required for 0.10
compatibility, or without hardware checksum support, which is required for 0.11
compatibility. Since default values for optional features are now set by qdev,
get_features callback has been modified: it sets non-optional bits, and clears
bits not supported by host.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'hw/virtio-blk.c')
| -rw-r--r-- | hw/virtio-blk.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/hw/virtio-blk.c b/hw/virtio-blk.c index a2f063974..cb1ae1f95 100644 --- a/hw/virtio-blk.c +++ b/hw/virtio-blk.c @@ -432,19 +432,15 @@ static void virtio_blk_update_config(VirtIODevice *vdev, uint8_t *config) memcpy(config, &blkcfg, s->config_size); } -static uint32_t virtio_blk_get_features(VirtIODevice *vdev) +static uint32_t virtio_blk_get_features(VirtIODevice *vdev, uint32_t features) { VirtIOBlock *s = to_virtio_blk(vdev); - uint32_t features = 0; features |= (1 << VIRTIO_BLK_F_SEG_MAX); features |= (1 << VIRTIO_BLK_F_GEOMETRY); if (bdrv_enable_write_cache(s->bs)) features |= (1 << VIRTIO_BLK_F_WCACHE); -#ifdef __linux__ - features |= (1 << VIRTIO_BLK_F_SCSI); -#endif if (strcmp(s->serial_str, "0")) features |= 1 << VIRTIO_BLK_F_IDENTIFY; |