[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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

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)
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.