Clive Stewell wrote:
> I have been testing KVM for eventual use in a production server
> environment and am running into some trouble when I attempt to rsync my
> data from the current production system to the test system.
> Specifically, whenever I hit a large file, the guest freezes and I get
> the following in the host's system log:
>
> Nov 8 16:14:20 vcr1 kernel: [2847590.399951] kvm: 10680: cpu0 unhandled
> wrmsr: 0xc1
> Nov 8 16:14:20 vcr1 kernel: [2847590.399959] inject_general_protection:
> rip 0xc01162ff
>
> I have Googled the error, but can't see anything that leads me to
> believe that I've made any errors in the configuration. Other things
> seem to work fine, but I can reproduce this freeze every time. Here's a
> recap of my environment...
>
> CPU Model: Intel Xeon 5130 2.0 Ghz
> KVM Version: 50
> Host Kernel: Linux version 2.6.20-16-generic (root@king) (gcc version
> 4.1.2 (Ubuntu 4.1.2-0ubuntu4)) #2 SMP Sun Sep 23 18:31:23 UTC 2007
> Host Kernel Arch: i386
> Guest: Ubuntu Gutsy (i386)
> QEMU Command Line: /opt/kvm/bin/qemu-system-x86_64 -hda
> /home/kvm/images.d/w5.img -boot c -m 384 -net
> nic,macaddr=00:14:1C:30:AF:03 -net tap,ifname=tap3,script=no -daemonize
> -vnc :3
>
> Thanks for any pointers you can provide.
>
>
You can try this [Not tested]:
diff --git a/kernel/x86.c b/kernel/x86.c
index e905d46..71307cb 100644
--- a/kernel/x86.c
+++ b/kernel/x86.c
@@ -460,6 +460,7 @@ int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata)
case MSR_IA32_UCODE_REV:
case MSR_IA32_PERF_STATUS:
case MSR_IA32_EBL_CR_POWERON:
+ case 0xc1:
/* MTRR registers */
case 0xfe:
case 0x200 ... 0x2ff:
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