KVM: x86 emulator: simplify REX.W check

(x && (x & y)) == (x & y) Signed-off-by: Avi Kivity <avi@redhat.com>
git-mirror · Oct 24, 2010 · 1e87e3e · 1e87e3e
1 parent d4709c7
commit 1e87e3e
Showing 1 changed file with 2 additions and 3 deletions.
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
@@ -2358,9 +2358,8 @@ 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];