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00343e4b54
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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
..
9pfs 9pfs: deprecate handle backend 2018-01-08 11:18:23 +01:00
acpi Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
adc maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
alpha Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
arm hw/arm/virt: Add virt-2.12 machine type 2018-01-16 13:28:10 +00:00
audio misc: remove old i386 dependency 2017-12-18 17:07:02 +03:00
block vhost-user-blk: introduce a new vhost-user-blk host device 2018-01-18 21:52:37 +02:00
bt bt: stop the sdp memory allocation craziness 2017-08-01 17:27:33 +02:00
char maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
core Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
cpu hw: use "qemu/osdep.h" as first #include in source files 2017-12-18 17:07:02 +03:00
cris cris: use generic cpu_model parsing 2017-10-27 16:03:54 +02:00
display * QemuMutex tracing improvements (Alex) 2018-01-16 15:45:15 +00:00
dma maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
gpio hw/gpio/omap_gpio.c: Don't use old_mmio 2017-09-21 16:34:27 +01:00
i2c * QemuMutex tracing improvements (Alex) 2018-01-16 15:45:15 +00:00
i386 pc: add 2.12 machine types 2018-01-17 23:04:31 -02:00
ide hw/ide: Emulate SiI3112 SATA controller 2018-01-10 12:53:00 +11:00
input Split adb.c into adb.c, adb-mouse.c and adb-kbd.c 2017-12-21 20:11:28 +01:00
intc hw/intc/armv7m: Support byte and halfword accesses to CFSR 2018-01-16 13:28:09 +00:00
ipack pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices 2017-10-15 05:54:43 +03:00
ipmi hw/ipmi: remove old i386 dependency 2017-12-18 17:07:02 +03:00
isa Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
lm32 lm32: lm32_boards: use generic cpu_model parsing 2017-10-27 16:03:54 +02:00
m68k m68k: mcf5208: use generic cpu_model parsing 2017-10-27 16:03:54 +02:00
mem spapr: replace numa_get_node() with lookup in pc-dimm list 2017-12-15 09:49:24 +11:00
microblaze hw: Use new memory_region_init_{ram, rom, rom_device}() functions 2017-07-14 17:59:42 +01:00
mips Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
misc maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
moxie hw/moxie/moxiesim: Add support for loading a BIOS on moxiesim 2017-12-21 09:30:31 +01:00
net * QemuMutex tracing improvements (Alex) 2018-01-16 15:45:15 +00:00
nios2 nios2: remove duplicated includes (in code commented out) 2017-12-18 17:07:02 +03:00
nvram mips: fix potential fopen(NULL,...) 2018-01-16 14:54:50 +01:00
openrisc openrisc: use generic cpu_model parsing 2017-10-27 16:03:54 +02:00
pci pci: Eliminate pci_find_primary_bus() 2017-12-05 19:13:45 +02:00
pci-bridge Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
pci-host Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
pcmcia hw: Clean up includes 2016-01-29 15:07:25 +00:00
ppc ppc/pnv: change initrd address 2018-01-17 09:35:24 +11:00
s390x Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
scsi * QemuMutex tracing improvements (Alex) 2018-01-16 15:45:15 +00:00
sd sdhci: add a 'dma' property to the sysbus devices 2018-01-16 13:28:21 +00:00
sh4 pci: Rename root bus initialization functions for clarity 2017-12-05 19:13:45 +02:00
smbios Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
sparc sun4m: remove include/hw/sparc/sun4m.h and all references to it 2018-01-09 21:48:20 +00:00
sparc64 sun4u_iommu: add trace event for IOMMU translations 2018-01-09 21:48:20 +00:00
ssi maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
timer maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
tpm maint: Fix macros with broken 'do/while(0); ' usage 2018-01-16 14:54:52 +01:00
tricore tricore: use generic cpu_model parsing 2017-10-27 16:04:27 +02:00
unicore32 hw/unicore32: restrict hw addr defines to source file 2017-12-18 17:07:02 +03:00
usb Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
vfio Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
virtio vhost-user-blk: introduce a new vhost-user-blk host device 2018-01-18 21:52:37 +02:00
watchdog misc: drop old i386 dependency 2017-12-18 17:07:03 +03:00
xen Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
xenpv xenfb: remove xen_init_display "temporary" hack 2017-07-07 11:10:03 -07:00
xtensa xtensa: lx60/lx200/ml605/kc705: use generic cpu_model parsing 2017-10-27 16:04:27 +02:00
Makefile.objs 9pfs: fix dependencies 2017-08-30 18:23:25 +02:00