Messages in this thread | | | Date | Fri, 21 Nov 2014 08:10:33 +0800 | From | Wanpeng Li <> | Subject | Re: KVM causes #GP on XRSTORS |
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Hi Nadav, On Thu, Nov 20, 2014 at 06:34:04PM +0200, Nadav Amit wrote: >Fenghua, > >I got KVM (v3.17) crashing on a machine that supports XRSTORS - It appears to get a #GP when it is trying to load the guest FPU. >One reason for the #GP is that XCOMP_BV[63] is zeroed on the guest_fpu, but I am not sure it is the only problem. >Was KVM ever tested with XRSTORS?
Current kvm and qemu use standard format and xsaves/xrstors should use compact format, in addition, vmx is still not enabled for xsaves/xrstors in kvm.
Regards, Wanpeng Li
> >Thanks, >Nadav > >-- >To unsubscribe from this list: send the line "unsubscribe kvm" in >the body of a message to majordomo@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html
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