diff options
| author | Changpeng Liu <changpeng.liu@intel.com> | 2018-01-04 09:53:32 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2018-01-18 21:52:37 +0200 |
| commit | 00343e4b54ba0685e9ebe928ec5713b0cf7f1d1c (patch) | |
| tree | d8827b2e2acab5c8803282db4bbee5c3808ca399 /hw/block/Makefile.objs | |
| parent | 4c3e257b5e6ccba6bd34f780fab8008e0d79680a (diff) | |
vhost-user-blk: introduce a new vhost-user-blk host device
This commit introduces a new vhost-user device for block, it uses a
chardev to connect with the backend, same with Qemu virito-blk device,
Guest OS still uses the virtio-blk frontend driver.
To use it, start QEMU with command line like this:
qemu-system-x86_64 \
-chardev socket,id=char0,path=/path/vhost.socket \
-device vhost-user-blk-pci,chardev=char0,num-queues=2, \
bootindex=2... \
Users can use different parameters for `num-queues` and `bootindex`.
Different with exist Qemu virtio-blk host device, it makes more easy
for users to implement their own I/O processing logic, such as all
user space I/O stack against hardware block device. It uses the new
vhost messages(VHOST_USER_GET_CONFIG) to get block virtio config
information from backend process.
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/block/Makefile.objs')
| -rw-r--r-- | hw/block/Makefile.objs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/block/Makefile.objs b/hw/block/Makefile.objs index e0ed980c90..4c19a583c8 100644 --- a/hw/block/Makefile.objs +++ b/hw/block/Makefile.objs @@ -13,3 +13,6 @@ obj-$(CONFIG_SH4) += tc58128.o obj-$(CONFIG_VIRTIO) += virtio-blk.o obj-$(CONFIG_VIRTIO) += dataplane/ +ifeq ($(CONFIG_VIRTIO),y) +obj-$(CONFIG_VHOST_USER_BLK) += vhost-user-blk.o +endif |