00343e4b54
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>
47 lines
1011 B
Makefile
47 lines
1011 B
Makefile
CONFIG_PCI=y
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# For now, CONFIG_IDE_CORE requires ISA, so we enable it here
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CONFIG_ISA_BUS=y
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CONFIG_VIRTIO_PCI=y
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CONFIG_VIRTIO=y
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CONFIG_USB_UHCI=y
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CONFIG_USB_OHCI=y
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CONFIG_USB_EHCI=y
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CONFIG_USB_XHCI=y
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CONFIG_USB_XHCI_NEC=y
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CONFIG_NE2000_PCI=y
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CONFIG_EEPRO100_PCI=y
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CONFIG_PCNET_PCI=y
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CONFIG_PCNET_COMMON=y
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CONFIG_AC97=y
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CONFIG_HDA=y
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CONFIG_ES1370=y
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CONFIG_LSI_SCSI_PCI=y
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CONFIG_VMW_PVSCSI_SCSI_PCI=y
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CONFIG_MEGASAS_SCSI_PCI=y
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CONFIG_MPTSAS_SCSI_PCI=y
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CONFIG_RTL8139_PCI=y
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CONFIG_E1000_PCI=y
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CONFIG_E1000E_PCI=y
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CONFIG_IDE_CORE=y
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CONFIG_IDE_QDEV=y
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CONFIG_IDE_PCI=y
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CONFIG_AHCI=y
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CONFIG_ESP=y
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CONFIG_ESP_PCI=y
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CONFIG_SERIAL=y
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CONFIG_SERIAL_ISA=y
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CONFIG_SERIAL_PCI=y
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CONFIG_IPACK=y
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CONFIG_WDT_IB6300ESB=y
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CONFIG_PCI_TESTDEV=y
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CONFIG_NVME_PCI=y
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CONFIG_SD=y
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CONFIG_SDHCI=y
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CONFIG_EDU=y
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CONFIG_VGA=y
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CONFIG_VGA_PCI=y
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CONFIG_IVSHMEM_DEVICE=$(CONFIG_IVSHMEM)
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CONFIG_ROCKER=y
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CONFIG_VHOST_USER_SCSI=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
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CONFIG_VHOST_USER_BLK=$(call land,$(CONFIG_VHOST_USER),$(CONFIG_LINUX))
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