Re: [Xen-devel] Is: cpuid creation of PV guests is not correct. Was:Re: [PATCH v6 00/10] vnuma introduction

[Elena Ufimtseva <ufimtseva@xxxxxxxxx>]

On Tue, Jul 22, 2014 at 6:53 PM, Dario Faggioli
<dario.faggioli@xxxxxxxxxx> wrote:
> On Tue, 2014-07-22 at 15:43 -0400, Konrad Rzeszutek Wilk wrote:
>> > I.e., no matter how I pin the vcpus, the guest sees the 4 vcpus as if
>> > they were all SMT siblings, within the same core, sharing all cache
>> > levels.
>>
>> My recollection was that the setting of these CPUID values is
>> tied in how the toolstack sees it - and since the toolstack
>> runs in the initial domain - that is where it picks this data up.
>>
>> This problem had been discussed by Andrew Cooper at some point
>> (Hackathon? Emails? IRC?) and moved under the 'fix cpuid creation/parsing'.
>>
>> I think that this issue should not affect Elena's patchset -
>> as the vNUMA is an innocent bystander that gets affected by this.
>>
> Agreed. Let's live with the WARN for now or, if that is annoying (e.g.
> for testing/benchmarking) with whatever (local!) hack one needs.
>
> Regards,
> Dario

Thank you guys, works for me for now.
>
> --
> <<This happens because I choose it to happen!>> (Raistlin Majere)
> -----------------------------------------------------------------
> Dario Faggioli, Ph.D, http://about.me/dario.faggioli
> Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)
>
>
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>



-- 
Elena

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