Re: [Qemu-devel] kvm_intel fails to load on Conroe CPUs running Linux 4.12

[Gerhard Wiesinger]

On 27.08.2017 14:03, Paolo Bonzini wrote:
> Il 27 ago 2017 9:49 AM, "Gerhard Wiesinger" <lists@xxxxxxxxxxxxx> ha
> scritto:
>
> On 17.08.2017 23:14, Gerhard Wiesinger wrote:
>
> > On 17.08.2017 22:58, Gerhard Wiesinger wrote:
> > > On 07.08.2017 19:50, Paolo Bonzini wrote:
> > >
> > > > Not much to say, unfortunately. It's pretty much the same capabilities
> > > > as a Prescott/Cedar Mill processor, except that it has MSR bitmaps. It
> > > > also lacks FlexPriority compared to the Conroe I had checked.
> > > >
> > > > It's not great that even the revert patch doesn't apply cleanly---this
> > > > is *not* necessarily a boring area of the hypervisor...
> > > >
> > > > Given the rarity of your machine I'm currently leaning towards _not_
> > > > reverting the change. I'll check another non-Xeon Core 2 tomorrow that
> > > > is from December 2008 (IIRC). If that one also lacks vNMI, or if I get
> > > > other reports, I suppose I will have to reconsider that.
> > Hello Paolo,
> >
> > Can you please revert the patch.
> >
> > CPU is a Core 2 Extreme QX6700: SL9UL (B3) running VERY stable with ECC
> > RAM for years now.
> > https://ark.intel.com/products/28028/Intel-Core2-Extreme-
> > Processor-QX6700-8M-Cache-2_66-GHz-1066-MHz-FSB?q=Core%
> > 202%20Extreme%20QX6700
> > https://en.wikipedia.org/wiki/List_of_Intel_Core_2_microprocessors
> >
> > CPU details below.
> >
> > Thank you.
> >
> > Ciao,
> > Gerhard
> Hello Paolo,
>
> Any update on this major issue?
>
>
> We will revert the patch, but 4.13.0 will not have the fix. Expect it in
> later stable kernels (because vacations).
Thnx. Why will 4.13.0 NOT have the fix?

Thnx.

Ciao,
Gerhard