[PATCH 07/15] KVM: x86 emulator: simplify REX.W check

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(x && (x & y)) == (x & y)

Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
 arch/x86/kvm/emulate.c |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 2ae2e54..a114fa9 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2353,9 +2353,8 @@ x86_decode_insn(struct x86_emulate_ctxt *ctxt)
 done_prefixes:
 
 	/* REX prefix. */
-	if (c->rex_prefix)
-		if (c->rex_prefix & 8)
-			c->op_bytes = 8;	/* REX.W */
+	if (c->rex_prefix & 8)
+		c->op_bytes = 8;	/* REX.W */
 
 	/* Opcode byte(s). */
 	opcode = opcode_table[c->b];
-- 
1.7.1

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