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Commit 9f27ee59 authored Jul 17, 2007 by Jeremy Fitzhardinge Committed by Jeremy Fitzhardinge Jul 18, 2007

xen: add virtual block device driver.



The block device frontend driver allows the kernel to access block
devices exported exported by a virtual machine containing a physical
block device driver.

Signed-off-by: Ian Pratt <ian.pratt@xensource.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Greg KH <greg@kroah.com>
Cc: Jens Axboe <axboe@kernel.dk>

parent 4bac07c9

drivers/block/Kconfig

+9 −0

Original line number	Original line	Diff line number	Diff line
	@@ -427,4 +427,13 @@ config XILINX_SYSACE
	help		help
	Include support for the Xilinx SystemACE CompactFlash interface		Include support for the Xilinx SystemACE CompactFlash interface

			config XEN_BLKDEV_FRONTEND
			tristate "Xen virtual block device support"
			depends on XEN
			default y
			help
			This driver implements the front-end of the Xen virtual
			block device driver. It communicates with a back-end driver
			in another domain which drives the actual block device.

	endif # BLK_DEV		endif # BLK_DEV

drivers/block/Makefile

+1 −0

Original line number	Original line	Diff line number	Diff line
	@@ -29,3 +29,4 @@ obj-$(CONFIG_VIODASD) += viodasd.o
	obj-$(CONFIG_BLK_DEV_SX8) += sx8.o		obj-$(CONFIG_BLK_DEV_SX8) += sx8.o
	obj-$(CONFIG_BLK_DEV_UB) += ub.o		obj-$(CONFIG_BLK_DEV_UB) += ub.o

			obj-$(CONFIG_XEN_BLKDEV_FRONTEND) += xen-blkfront.o

drivers/block/xen-blkfront.c

0 → 100644

+988 −0

File added.

Preview size limit exceeded, changes collapsed.

include/linux/major.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -158,6 +158,8 @@
	#define VXSPEC_MAJOR 200 /* VERITAS volume config driver */		#define VXSPEC_MAJOR 200 /* VERITAS volume config driver */
	#define VXDMP_MAJOR 201 /* VERITAS volume multipath driver */		#define VXDMP_MAJOR 201 /* VERITAS volume multipath driver */

			#define XENVBD_MAJOR 202 /* Xen virtual block device */

	#define MSR_MAJOR 202		#define MSR_MAJOR 202
	#define CPUID_MAJOR 203		#define CPUID_MAJOR 203