xen: add backend driver support
Impact: backend device support
Add the basic machinery to support backend drivers.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
[corresponds to 79727b851bac in git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 10b6bef..84bf17b 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -29,6 +29,14 @@
firing.
If in doubt, say yes.
+config XEN_BACKEND
+ tristate "Backend driver support"
+ depends on XEN_DOM0
+ default y
+ help
+ Support for backend device drivers that provide I/O services
+ to other virtual machines.
+
config XENFS
tristate "Xen filesystem"
default y