xen/x86: retrieve keyboard shift status flags from hypervisor.

The xen c/s 25873 allows the hypervisor to retrieve the NUMLOCK flag.
With this patch, the Linux kernel can get the state according to the
data in the BIOS.

Acked-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/xen/interface/platform.h b/include/xen/interface/platform.h
index a3275a850e54..54ad6f9e4725 100644
--- a/include/xen/interface/platform.h
+++ b/include/xen/interface/platform.h
@@ -112,6 +112,7 @@ DEFINE_GUEST_HANDLE_STRUCT(xenpf_platform_quirk_t);
 #define XEN_FW_DISK_INFO          1 /* from int 13 AH=08/41/48 */
 #define XEN_FW_DISK_MBR_SIGNATURE 2 /* from MBR offset 0x1b8 */
 #define XEN_FW_VBEDDC_INFO        3 /* from int 10 AX=4f15 */
+#define XEN_FW_KBD_SHIFT_FLAGS    5 /* Int16, Fn02: Get keyboard shift flags. */
 struct xenpf_firmware_info {
         /* IN variables. */
         uint32_t type;
@@ -142,6 +143,8 @@ struct xenpf_firmware_info {
                         /* must refer to 128-byte buffer */
                         GUEST_HANDLE(uchar) edid;
                 } vbeddc_info; /* XEN_FW_VBEDDC_INFO */
+
+                uint8_t kbd_shift_flags; /* XEN_FW_KBD_SHIFT_FLAGS */
         } u;
 };
 DEFINE_GUEST_HANDLE_STRUCT(xenpf_firmware_info_t);