xen: introduce a Kconfig option to enable the pvcalls frontend

Also add pvcalls-front to the Makefile.

Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 4545561..d8dd546 100644 (file)
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -196,6 +196,17 @@ config XEN_PCIDEV_BACKEND
 
          If in doubt, say m.
 
+config XEN_PVCALLS_FRONTEND
+       tristate "XEN PV Calls frontend driver"
+       depends on INET && XEN
+       default n
+       select XEN_XENBUS_FRONTEND
+       help
+         Experimental frontend for the Xen PV Calls protocol
+         (https://xenbits.xen.org/docs/unstable/misc/pvcalls.html). It
+         sends a small set of POSIX calls to the backend, which
+         implements them.
+
 config XEN_PVCALLS_BACKEND
        bool "XEN PV Calls backend driver"
        depends on INET && XEN && XEN_BACKEND

diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
index caaa15d..82466f2 100644 (file)
--- a/drivers/xen/Makefile
+++ b/drivers/xen/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_XEN_EFI)                 += efi.o
 obj-$(CONFIG_XEN_SCSI_BACKEND)         += xen-scsiback.o
 obj-$(CONFIG_XEN_AUTO_XLATE)           += xlate_mmu.o
 obj-$(CONFIG_XEN_PVCALLS_BACKEND)      += pvcalls-back.o
+obj-$(CONFIG_XEN_PVCALLS_FRONTEND)     += pvcalls-front.o
 xen-evtchn-y                           := evtchn.o
 xen-gntdev-y                           := gntdev.o
 xen-gntalloc-y                         := gntalloc.o