KVM: x86 emulator: implement 'movnti mem, reg'

Implement emulation of instruction:
    movnti m32/m64, r32/r64
    opcode: 0x0f 0xc3

Signed-off-by: Sheng Yang <sheng.yang@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 80b1758e2d33..0a8696d9b82c 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -212,7 +212,8 @@ static u16 twobyte_table[256] = {
         0, 0, ByteOp | DstReg | SrcMem | ModRM | Mov,
             DstReg | SrcMem16 | ModRM | Mov,
         /* 0xC0 - 0xCF */
-        0, 0, 0, 0, 0, 0, 0, ImplicitOps | ModRM, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, DstMem | SrcReg | ModRM | Mov, 0, 0, 0, ImplicitOps | ModRM,
+        0, 0, 0, 0, 0, 0, 0, 0,
         /* 0xD0 - 0xDF */
         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
         /* 0xE0 - 0xEF */
@@ -1501,6 +1502,10 @@ twobyte_insn:
                 dst.bytes = op_bytes;
                 dst.val = (d & ByteOp) ? (s8) src.val : (s16) src.val;
                 break;
+        case 0xc3:              /* movnti */
+                dst.bytes = op_bytes;
+                dst.val = (op_bytes == 4) ? (u32) src.val : (u64) src.val;
+                break;
         }
         goto writeback;