[PATCH 08/15] KVM: x86 emulator: introduce Force64 for forcing operand size to 64 bits

[Avi Kivity <avi@redhat.com>]

Signed-off-by: Avi Kivity <avi@redhat.com>
---
 arch/x86/kvm/emulate.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index a114fa9..d7d95de 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -83,6 +83,7 @@
 #define Group       (1<<14)     /* Bits 3:5 of modrm byte extend opcode */
 #define GroupDual   (1<<15)     /* Alternate decoding of mod == 3 */
 /* Misc flags */
+#define Force64     (1<<24) /* Force operand size to 64 bits in 64-bit mode */
 #define Undefined   (1<<25) /* No Such Instruction */
 #define Lock        (1<<26) /* lock prefix is allowed for the instruction */
 #define Priv        (1<<27) /* instruction generates #GP if current CPL != 0 */
@@ -2398,7 +2399,7 @@ done_prefixes:
 		return -1;
 	}
 
-	if (mode == X86EMUL_MODE_PROT64 && (c->d & Stack))
+	if (mode == X86EMUL_MODE_PROT64 && (c->d & (Stack | Force64)))
 		c->op_bytes = 8;
 
 	/* ModRM and SIB bytes. */
-- 
1.7.1