From: Mohammed Gamal <m.gamal005@gmail.com>
Date: Wed, 4 Aug 2010 11:41:04 +0000 (+0300)
Subject: KVM: x86 emulator: Fix nop emulation
X-Git-Tag: v3.0~3047^2~256
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=34698d8c61bd3fc86b2e99c3d1ad9ef140b3eb0d;p=platform%2Fkernel%2Flinux-amlogic.git

KVM: x86 emulator: Fix nop emulation

If a nop instruction is encountered, we jump directly to the done label.
This skip updating rip. Break from the switch case instead

Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 955d480..ddbad15 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -2912,7 +2912,7 @@ special_insn:
 		break;
 	case 0x90 ... 0x97: /* nop / xchg reg, rax */
 		if (c->dst.addr.reg == &c->regs[VCPU_REGS_RAX])
-			goto done;
+			break;
 		goto xchg;
 	case 0x9c: /* pushf */
 		c->src.val =  (unsigned long) ctxt->eflags;