kvm: vcpu unhandled rdmsr:

[Paolo Bonzini]

On 19/12/2014 16:44, poma wrote:
> Mister Bonzini, what are these errors?

They are harmless.  Typically it means that the VM is trying to access
registers for performance counters or machine check exceptions.

Instead, this:

> [  125.880384] kvm: zapping shadow pages for mmio generation wraparound

should be downgraded to KERN_DEBUG severity.

> [ 4011.896698] kvm: zapping shadow pages for mmio generation wraparound
> [ 4046.744577] kvm [4706]: vcpu0 unhandled rdmsr: 0xc0010112
> [ 4046.815794] kvm [4706]: vcpu0 unhandled rdmsr: 0xc001100d
> [ 4046.949092] kvm [4706]: vcpu0 unhandled rdmsr: 0xc0010001
> [ 4046.962165] kvm [4706]: vcpu1 unhandled rdmsr: 0xc001100d
> 
> Both Fedora 21 x64 host & Fedora 21 x64 guest are hosed, hard reset is must.

It should not be hosed because of the rdmsr.

What processor do you have in the host?  Can you include the output of
"ps | grep qemu"?

Paolo