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authorLaurent Vivier <Laurent.Vivier@bull.net>2007-09-20 11:17:24 +0200
committerAvi Kivity <avi@qumranet.com>2007-10-22 12:03:28 +0200
commitae6200baea4175cac684ea76f78082b31afbdefa (patch)
treea6b8a9d17179b85018d4fb4250373cd3ba28e597
parent1a52e051368a0e29b26e8790bacd8d1d759e3287 (diff)
downloadop-kernel-dev-ae6200baea4175cac684ea76f78082b31afbdefa.zip
op-kernel-dev-ae6200baea4175cac684ea76f78082b31afbdefa.tar.gz
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 <Laurent.Vivier@bull.net> Signed-off-by: Avi Kivity <avi@qumranet.com>
-rw-r--r--drivers/kvm/x86_emulate.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index b1026d2..80b1758 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;
}
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