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

[Paolo Bonzini]

Il 27 ago 2017 9:49 AM, "Gerhard Wiesinger" <address@hidden> 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).

Paolo

Thnx.

Ciao,
Gerhard