qemu/include
Changpeng Liu 00343e4b54 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>
2018-01-18 21:52:37 +02:00
..
block nbd: rename nbd_option and nbd_opt_reply 2018-01-10 12:11:23 -06:00
chardev chardev: introduce qemu_chr_timeout_add_ms() 2018-01-12 13:22:02 +01:00
crypto block: convert qcrypto_block_encrypt|decrypt to take bytes offset 2017-10-06 16:30:47 +02:00
disas target/xtensa: implement disassembler 2018-01-09 09:55:39 -08:00
exec cpu_physical_memory_sync_dirty_bitmap: Another alignment fix 2018-01-16 14:54:52 +01:00
fpu configure: Drop ancient Solaris 9 and earlier support 2017-07-21 15:04:05 +01:00
hw vhost-user-blk: introduce a new vhost-user-blk host device 2018-01-18 21:52:37 +02:00
io io: introduce a network socket listener API 2017-12-15 15:07:26 +00:00
libdecnumber Clean up ill-advised or unusual header guards 2016-07-12 16:20:46 +02:00
migration migration: finalize current_migration object 2018-01-15 12:48:05 +01:00
monitor block: rip out all traces of password prompting 2017-07-11 17:44:56 +02:00
net net: Remove the legacy "-net channel" parameter 2017-12-22 10:05:26 +08:00
qapi qapi: Add qobject_is_equal() 2017-11-17 18:21:30 +01:00
qemu util/qemu-thread-*: add qemu_lock, locked and unlock trace events 2018-01-16 14:54:52 +01:00
qom i386: hvf: add code base from Google's QEMU repository 2017-12-22 15:01:20 +01:00
scsi scsi: provide general-purpose functions to manage sense data 2017-12-21 09:30:32 +01:00
standard-headers linux-headers: update to 4.15-rc1 2017-12-13 17:59:23 +00:00
sysemu i386: hvf: implement vga dirty page tracking 2017-12-22 15:01:48 +01:00
ui sdl2: Ignore UI hotkeys after a focus change when GUI modifier is held 2018-01-12 15:51:18 +01:00
elf.h tcg/s390: Use constant pool for movi 2017-09-07 11:57:35 -07:00
glib-compat.h glib-compat: move G_SOURCE_CONTINUE/REMOVE there 2017-10-10 16:33:55 +02:00
qemu-common.h Use HTTPS for qemu.org and other domains 2017-11-21 13:34:13 +00:00
qemu-io.h hmp: Request permissions in qemu-io 2017-02-28 20:47:50 +01:00
trace-tcg.h trace: get rid of generated-events.h/generated-events.c 2016-10-12 09:54:52 +02:00