KVM: Simplify decode_register_operand() calling convention

Now that rex_prefix is part of the decode cache, there is no need to pass
it along.

Signed-off-by: Avi Kivity <avi@qumranet.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 884e4a2e47e6..b352a6c4d4a2 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -518,10 +518,10 @@ static int test_cc(unsigned int condition, unsigned int flags)
 
 static void decode_register_operand(struct operand *op,
                                     struct decode_cache *c,
-                                    int highbyte_regs,
                                     int inhibit_bytereg)
 {
         unsigned reg = c->modrm_reg;
+        int highbyte_regs = c->rex_prefix == 0;
 
         if (!(c->d & ModRM))
                 reg = (c->b & 7) | ((c->rex_prefix & 1) << 3);
@@ -837,7 +837,7 @@ modrm_done:
         case SrcNone:
                 break;
         case SrcReg:
-                decode_register_operand(&c->src, c, c->rex_prefix == 0, 0);
+                decode_register_operand(&c->src, c, 0);
                 break;
         case SrcMem16:
                 c->src.bytes = 2;
@@ -895,7 +895,7 @@ modrm_done:
                 /* Special instructions do their own operand decoding. */
                 return 0;
         case DstReg:
-                decode_register_operand(&c->dst, c, c->rex_prefix == 0,
+                decode_register_operand(&c->dst, c,
                          c->twobyte && (c->b == 0xb6 || c->b == 0xb7));
                 break;
         case DstMem: