Commit d3ad6243 authored Aug 05, 2010 by Wei Yongjun Committed by Avi Kivity Oct 24, 2010

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>

parent a58ddea5

arch/x86/kvm/emulate.c

+5 −7

Original line number	Diff line number	Diff line
		@@ -2375,14 +2375,12 @@ 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];
		}
		}
		c->d = opcode.flags;

		if (c->d & Group) {

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