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

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Message-ID: <3e1f41a8-faff-1858-6f0d-154694dff02d@wiesinger.com>
Date:   Sun, 27 Aug 2017 09:47:50 +0200
From:   Gerhard Wiesinger <lists@...singer.com>
To:     linux-kernel@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        qemu-devel@...gnu.org
Subject: Re: [Qemu-devel] kvm_intel fails to load on Conroe CPUs running Linux
 4.12

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?

Thnx.

Ciao,
Gerhard