Am Montag 30 Juli 2007 schrieb Avi Kivity: > Alistair John Strachan wrote: [...] > > Basically, the installer seems to work fine, but Windows seemed to have > > problems after installing post-SP2 updates. Maybe that's why not > > everybody is seeing it yet. > > How about the attached patch? (I haven't yet tried to reproduce, but > this can cause an AMD-only oops).
commit 80917728e43e248155c019f743655806b582b099
Author: Avi Kivity <[EMAIL PROTECTED]>
Date: Mon Jul 30 15:56:36 2007 +0300
KVM: x86 emulator: disable writeback for debug register instructions
These are handled internally by the instruction.
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/drivers/kvm/x86_emulate.c b/drivers/kvm/x86_emulate.c
index 1a90ba0..2136da5 100644
--- a/drivers/kvm/x86_emulate.c
+++ b/drivers/kvm/x86_emulate.c
@@ -1222,11 +1222,13 @@ twobyte_insn:
}
break;
case 0x21: /* mov from dr to reg */
+ no_wb = 1;
if (modrm_mod != 3)
goto cannot_emulate;
rc = emulator_get_dr(ctxt, modrm_reg, &_regs[modrm_rm]);
break;
case 0x23: /* mov from reg to dr */
+ no_wb = 1;
if (modrm_mod != 3)
goto cannot_emulate;
rc = emulator_set_dr(ctxt, modrm_reg, _regs[modrm_rm]);
Unfortunately this doesn't seem to have made it into 2.6.23-rc2. I need it as
well, to make Windows XP boot up w/o hanging or reebooting my host machine.
Cheers,
--
(°= =°)
//\ Prakash Punnoor /\\
V_/ \_V
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