On Sun, Aug 05, 2012 at 05:14:59PM +0300, Avi Kivity wrote:
> On 08/05/2012 03:58 PM, Gleb Natapov wrote:
> > According to SDM apic is enabled on start up.
> >
> > Signed-off-by: Gleb Natapov <[email protected]>
> > ---
> > arch/x86/kvm/lapic.c | 3 ++-
> > 1 file changed, 2 insertions(+), 1 deletion(-)
> >
> > diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> > index 49f4ac0..c3f14fe 100644
> > --- a/arch/x86/kvm/lapic.c
> > +++ b/arch/x86/kvm/lapic.c
> > @@ -1311,7 +1311,8 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu)
> > HRTIMER_MODE_ABS);
> > apic->lapic_timer.timer.function = apic_timer_fn;
> >
> > - kvm_lapic_set_base(vcpu, APIC_DEFAULT_PHYS_BASE);
> > + kvm_lapic_set_base(vcpu,
> > + APIC_DEFAULT_PHYS_BASE | MSR_IA32_APICBASE_ENABLE);
> >
>
> I'm guessing that in practice this is a no-op since qemu reset involves
> programming this MSR.
>
Qemu is not the only userspace :) But this is here to avoid unneeded
jump label patching truth to be told.
--
Gleb.
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