Hi,
Some older (~2.6.7) kernels write MCG_STATUS register during kernel boot
(mce_clear_all() function, called from mce_init()). It's not currently
handled by kvm and will cause it to inject a GPF.
Following patch adds a "nop" handler for this:
--- kvm-17/kernel/kvm_main.c.orig 2007-03-20 15:12:42.000000000
+0200
+++ kvm-17/kernel/kvm_main.c 2007-03-22 13:37:34.000000000 +0200
@@ -1498,6 +1498,10 @@
printk(KERN_WARNING "%s: MSR_IA32_MC0_STATUS 0x%llx,
nop\n",
__FUNCTION__, data);
break;
+ case MSR_IA32_MCG_STATUS:
+ printk(KERN_WARNING "%s: MSR_IA32_MCG_STATUS 0x%llx,
nop\n",
+ __FUNCTION__, data);
+ break;
case MSR_IA32_UCODE_REV:
case MSR_IA32_UCODE_WRITE:
case 0x200 ... 0x2ff: /* MTRRs */
Thanks,
Sergey Kiselev
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