2014-11-10 18:35+0100, Paolo Bonzini:
> On 06/11/2014 17:45, Radim Krčmář wrote:
> > -           } else if (kvm_apic_hw_enabled(apic)) {
> > +           } else if (kvm_apic_get_reg(apic, APIC_LDR)) {
> >                     if (kvm_apic_get_reg(apic, APIC_DFR) ==
> >                                                     APIC_DFR_CLUSTER) {
> >                             new->cid_shift = 4;
> 
> Why are you removing the kvm_apic_hw_enabled(apic)?  We do not reset the
> APIC to the power-up values (the SDM says that "may" happen) when the
> enabled bit is turned off in the APIC_BASE MSR.

We checked for that before, in kvm_apic_present().
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