Re: GPF in intel_pmu_lbr_reset() with qemu -cpu host

[Andi Kleen]

On Fri, Mar 21, 2014 at 01:46:04PM -0700, H. Peter Anvin wrote:
> Not really.  That is equally braindamaged.  The problem is that KVM is telling the host that our is something it simply cannot be.

Well it has to pick something. It's unlikely it will ever implement 100% of that particular CPU.
0 is the best you can get in many cases.

Also I thought Xen did return 0.

-Andi
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