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KVM: x86 emulator: fix repne/repnz decoding 

The repnz/repne instructions must set rep_prefix to 1 like rep/repe/repz.

This patch correct the disk probe problem met with OpenBSD.

This issue appears with commit e70669abd4
because before it, the decoding was done internally to kvm and after it
is done by x86_emulate.c (which doesn't do it correctly).

Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Avi Kivity <avi@qumranet.com>
This commit is contained in:
Laurent Vivier 2007-09-20 11:17:24 +02:00 committed by Avi Kivity
parent 1a52e05136
commit ae6200baea
1 changed files with 1 additions and 2 deletions
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3
drivers/kvm/x86_emulate.c
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@ -596,11 +596,10 @@ x86_emulate_memop(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops)
case 0xf0: /* LOCK */ case 0xf0: /* LOCK */
lock_prefix = 1; lock_prefix = 1;
break; break;
case 0xf2: /* REPNE/REPNZ */
case 0xf3: /* REP/REPE/REPZ */ case 0xf3: /* REP/REPE/REPZ */
rep_prefix = 1; rep_prefix = 1;
break; break;
case 0xf2: /* REPNE/REPNZ */
break;
default: default:
goto done_prefixes; goto done_prefixes;
} }