Re: [Qemu-devel] KVM guest cpu L3 cache and cpufreq

[Gleb Natapov]

On Tue, Aug 13, 2013 at 08:17:13PM +0200, Benoît Canet wrote:
> 
> Hi,
> 
> I noticed that the l3 cache size of a guest /proc/cpuinfo is not the same as
> the l3 cache size of the host.
> 
> I did not found any references to this in the qemu and KVM code.
> 
> Is the size of the guest L3 cache fixed in hardware ?
> 
No, it is hardcoded somewhere in qemu cpuid code.

> Can a patch be written to set it ?
> 
Yes.

> Similarly I noticed that the frequency in the guest was not reflecting the
> frequency scaling of the host.
> 
Not sure what you mean here. Frequency as seen where?

> Could anything be done for this ? 
> 
> Best regards
> 
> Benoît

--
                        Gleb.