On 08.01.2012, at 14:24, Avi Kivity wrote:
> On 01/04/2012 03:10 AM, Alexander Graf wrote:
>> Our vcpu kick implementation differs a bit from x86 which resulted in us not
>> disabling preemption during the kick. Get it a bit closer to what x86 does.
>>
>> Signed-off-by: Alexander Graf <agraf@xxxxxxx>
>> ---
>> arch/powerpc/kvm/powerpc.c | 7 ++++++-
>> 1 files changed, 6 insertions(+), 1 deletions(-)
>>
>> diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
>> index c952f13..ef8c990 100644
>> --- a/arch/powerpc/kvm/powerpc.c
>> +++ b/arch/powerpc/kvm/powerpc.c
>> @@ -557,12 +557,17 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
>>
>> void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
>> {
>> + int me;
>> + int cpu = vcpu->cpu;
>> +
>> + me = get_cpu();
>
> Whitespace.
>
>> if (waitqueue_active(&vcpu->wq)) {
>> wake_up_interruptible(vcpu->arch.wqp);
>> vcpu->stat.halt_wakeup++;
>> - } else if (vcpu->cpu != -1) {
>> + } else if (cpu != me && cpu != -1) {
>> smp_send_reschedule(vcpu->cpu);
>> }
>> + put_cpu();
>> }
>>
>> int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
>
> Eventually, let's move kvm_vcpu_kick() to generic code.
Yup :). I think Christoffer is working on that.
Alex
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