Re: kvm: zapping shadow pages for mmio generation wraparound

Zlatko Calusic
2013-07-23T12:35:33Z

On 23.07.2013 13:50, Paolo Bonzini wrote:
> Il 22/07/2013 22:57, Zlatko Calusic ha scritto:
>> I'm getting a lot of these in kernel 3.11.0-rc1:
>>
>> Jul 19 19:53:06 ps kernel: kvm: zapping shadow pages for mmio generation
>> wraparound
>> Jul 19 22:37:47 ps kernel: kvm: zapping shadow pages for mmio generation
>> wraparound
>> Jul 20 00:07:24 ps kernel: kvm: zapping shadow pages for mmio generation
>> wraparound
>> Jul 20 00:11:04 ps kernel: kvm: zapping shadow pages for mmio generation
>> wraparound
>> Jul 20 00:39:14 ps kernel: kvm: zapping shadow pages for mmio generation
>> wraparound
>> Jul 21 00:25:32 ps kernel: kvm: zapping shadow pages for mmio generation
>> wraparound
>>
>> There seems to be one line in the kernel log for every reboot of a WinXP
>> guest, and I'm getting a bit bored with it. I don't understand what
>> those messages mean? What can I do to stop them flooding the log?
>>
>> Please Cc: (not subscribed)
>
> The log message would let us correlate any reports with a new
> optimization (added in 3.11). We will probably downgrade it to
> KERN_DEBUG before 3.11 goes out (or otherwise cause it to disappear), in
> the meanwhile it's harmless.
>

Ah, OK then. Thanks for the info. And certainly thanks for the great
virtualization platform!

Best regards,
--
Zlatko