From: Wei Yongjun <yjwei@cn.fujitsu.com>
Date: Thu, 5 Aug 2010 08:34:39 +0000 (+0800)
Subject: KVM: x86 emulator: simplify two-byte opcode check
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=d3ad6243293d92c82530a50c77d71bb0a0a42fdc;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git

KVM: x86 emulator: simplify two-byte opcode check

Two-byte opcode always start with 0x0F and the decode flags
of opcode 0xF0 is always 0, so remove dup check.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index ddbad15c9486..a9a4a0b78a7d 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2375,13 +2375,11 @@ done_prefixes:
 
 	/* Opcode byte(s). */
 	opcode = opcode_table[c->b];
-	if (opcode.flags == 0) {
-		/* Two-byte opcode? */
-		if (c->b == 0x0f) {
-			c->twobyte = 1;
-			c->b = insn_fetch(u8, 1, c->eip);
-			opcode = twobyte_table[c->b];
-		}
+	/* Two-byte opcode? */
+	if (c->b == 0x0f) {
+		c->twobyte = 1;
+		c->b = insn_fetch(u8, 1, c->eip);
+		opcode = twobyte_table[c->b];
 	}
 	c->d = opcode.flags;