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-rw-r--r--drivers/block/Kconfig21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index 83c32cb72582..717d6e4e18d3 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -470,6 +470,27 @@ config XEN_BLKDEV_FRONTEND
block device driver. It communicates with a back-end driver
in another domain which drives the actual block device.
+config XEN_BLKDEV_BACKEND
+ tristate "Block-device backend driver"
+ depends on XEN_BACKEND
+ help
+ The block-device backend driver allows the kernel to export its
+ block devices to other guests via a high-performance shared-memory
+ interface.
+
+ The corresponding Linux frontend driver is enabled by the
+ CONFIG_XEN_BLKDEV_FRONTEND configuration option.
+
+ The backend driver attaches itself to a any block device specified
+ in the XenBus configuration. There are no limits to what the block
+ device as long as it has a major and minor.
+
+ If you are compiling a kernel to run in a Xen block backend driver
+ domain (often this is domain 0) you should say Y here. To
+ compile this driver as a module, chose M here: the module
+ will be called xen-blkback.
+
+
config VIRTIO_BLK
tristate "Virtio block driver (EXPERIMENTAL)"
depends on EXPERIMENTAL && VIRTIO