commit c481bc1108ebf293b7ea23c478378f360ef51758
Author: Izik Eidus <izike-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Date:   Wed Jan 23 15:16:26 2008 +0200

    KVM: x86 emulator: fix decoding of registers to dst and src in case of
    instructions that declared  as SrcMem or DstMem,
    
    right now for instructions that declared as SrcMem or DstMem we dont decode
    the registers for dst and src.
    
    Signed-off-by: Izik Eidus <izike-atKUWr5tajBWk0Htik3J/w@public.gmane.org>

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index bd46de6..1764afe 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -830,6 +830,21 @@ done_prefixes:
 		 */
 		if ((d & ModRM) && modrm_mod == 3) {
 			src.type = OP_REG;
+			src.ptr = decode_register(modrm_reg, _regs, 0);
+			switch ((src.bytes = op_bytes)) {
+			case 1:
+				src.val = src.orig_val = *(u8 *) src.ptr;
+				break;
+			case 2:
+				src.val = src.orig_val = *(u16 *) src.ptr;
+				break;
+			case 4:
+				src.val = src.orig_val = *(u32 *) src.ptr;
+				break;
+			case 8:
+				src.val = src.orig_val = *(u64 *) src.ptr;
+				break;
+			}
 			break;
 		}
 		src.type = OP_MEM;
@@ -906,6 +921,21 @@ done_prefixes:
 		 */
 		if ((d & ModRM) && modrm_mod == 3) {
 			dst.type = OP_REG;
+			dst.ptr = decode_register(modrm_reg, _regs, 0);
+			switch ((dst.bytes = op_bytes)) {
+			case 1:
+				dst.val = *(u8 *)dst.ptr;
+				break;
+			case 2:
+				dst.val = *(u16 *)dst.ptr;
+				break;
+			case 4:
+				dst.val = *(u32 *)dst.ptr;
+				break;
+			case 8:
+				dst.val = *(u64 *)dst.ptr;
+				break;
+			}
 			break;
 		}
 		if (d & BitOp) {