From: Laurent Vivier Date: Thu, 20 Sep 2007 09:17:24 +0000 (+0200) Subject: KVM: x86 emulator: fix repne/repnz decoding X-Git-Tag: v2.6.24-rc1~59^2~11 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ae6200baea4175cac684ea76f78082b31afbdefa;p=linux-2.6 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 e70669abd4e60dfea3ac1639848e20e2b8dd1255 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 Signed-off-by: Avi Kivity --- diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c index b1026d2c8a..80b1758e2d 100644 --- a/drivers/kvm/x86_emulate.c +++ b/drivers/kvm/x86_emulate.c @@ -596,11 +596,10 @@ x86_emulate_memop(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops) case 0xf0: /* LOCK */ lock_prefix = 1; break; + case 0xf2: /* REPNE/REPNZ */ case 0xf3: /* REP/REPE/REPZ */ rep_prefix = 1; break; - case 0xf2: /* REPNE/REPNZ */ - break; default: goto done_prefixes; }