Commit 9f27ee59 authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Jeremy Fitzhardinge
Browse files

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: default avatarIan Pratt <ian.pratt@xensource.com>
Signed-off-by: default avatarChristian Limpach <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: default avatarChris 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

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@@ -427,4 +427,13 @@ config XILINX_SYSACE 
	help

	  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

drivers/block/Makefile

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@@ -29,3 +29,4 @@ obj-$(CONFIG_VIODASD) += viodasd.o 
obj-$(CONFIG_BLK_DEV_SX8)	+= sx8.o

obj-$(CONFIG_BLK_DEV_UB)	+= ub.o



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

drivers/block/xen-blkfront.c

0 → 100644
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File added.

Preview size limit exceeded, changes collapsed.

include/linux/major.h

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@@ -158,6 +158,8 @@ 
#define VXSPEC_MAJOR		200	/* VERITAS volume config driver */

#define VXDMP_MAJOR		201	/* VERITAS volume multipath driver */



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



#define MSR_MAJOR		202

#define CPUID_MAJOR		203

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