On Mon, Feb 06, 2012 at 09:06:04PM +0100, Jan Kiszka wrote:
> On 2012-02-06 19:25, Marcelo Tosatti wrote:
> >> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> >> index c38efd7..a1761ff 100644
> >> --- a/arch/x86/kvm/x86.c
> >> +++ b/arch/x86/kvm/x86.c
> >> @@ -2252,7 +2252,6 @@ void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int
> >> cpu)
> >> kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu);
> >> if (vcpu->cpu != cpu)
> >> kvm_migrate_timers(vcpu);
> >> - vcpu->cpu = cpu;
> >> }
> >
> > This is wrong, kvm_sched_in fails to see vcpu->cpu properly. Please
> > keep vcpu->cpu assignment in arch code.
>
> True, but then kvm_sched_in is a better place for this assignment (as
> it's central), no?
>
> Jan
Not necessarily. Arch code might want to have:
kvm_arch_vcpu_load()
{
cpu = smp_processor_id();
if (vcpu->cpu != cpu) {
localize vcpu to cpu
vcpu->cpu = cpu
}
call functions which use vcpu->cpu
}
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