xen: add blkback support

[firefly-linux-kernel-4.4.55.git] / drivers / xen / Kconfig

diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index a59638b37c1add565887e30feba7aebc7c3b54be..fb1af628cbfc00a56efd51d489d7debfe6f80347 100644 (file)
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -37,6 +37,14 @@ config XEN_BACKEND
          Support for backend device drivers that provide I/O services
          to other virtual machines.
 
+config XEN_BLKDEV_BACKEND
+       tristate "Block-device backend driver"
+       depends on XEN_BACKEND && BLOCK
+       help
+         The block-device backend driver allows the kernel to export its
+         block devices to other guests via a high-performance shared-memory
+         interface.
+
 config XENFS
        tristate "Xen filesystem"
        default y