Ben-Ami Yassour wrote:
> On Sat, 2008-07-05 at 14:05 +0300, Avi Kivity wrote:
>
>> Amit Shah wrote:
>>
>>> This function injects an interrupt into the guest given the kvm struct,
>>> the (guest) irq number and the interrupt level.
>>>
>>> Signed-off-by: Amit Shah <[EMAIL PROTECTED]>
>>> ---
>>> arch/x86/kvm/irq.c | 11 +++++++++++
>>> arch/x86/kvm/irq.h | 2 ++
>>> 2 files changed, 13 insertions(+), 0 deletions(-)
>>>
>>> diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
>>> index 76d736b..0d9e552 100644
>>> --- a/arch/x86/kvm/irq.c
>>> +++ b/arch/x86/kvm/irq.c
>>> @@ -100,3 +100,14 @@ void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
>>> __kvm_migrate_apic_timer(vcpu);
>>> __kvm_migrate_pit_timer(vcpu);
>>> }
>>> +
>>> +/* This should be called with the kvm->lock mutex held */
>>> +void kvm_set_irq(struct kvm *kvm, int irq, int level)
>>> +{
>>> + /* Not possible to detect if the guest uses the PIC or the
>>> + * IOAPIC. So set the bit in both. The guest will ignore
>>> + * writes to the unused one.
>>> + */
>>> + kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level);
>>> + kvm_pic_set_irq(pic_irqchip(kvm), irq, level);
>>> +}
>>>
>>>
>> pic supports only irqs 0-15.
>>
>> I guess instead of adding the check here, better move it into i8259.c
>> and ioapic.c.
>>
>>
>>
>
> Do you mean something like the patch below?
> ( in the ioapic code there is already a check for the irq: if (irq >= 0 &&
> irq < IOAPIC_NUM_PINS) )
>
> Thanks,
> Ben
>
> diff --git a/arch/x86/kvm/i8259.c b/arch/x86/kvm/i8259.c
> index 3ba5e5c..c2c4884 100644
> --- a/arch/x86/kvm/i8259.c
> +++ b/arch/x86/kvm/i8259.c
> @@ -130,8 +130,10 @@ void kvm_pic_set_irq(void *opaque, int irq, int level)
> {
> struct kvm_pic *s = opaque;
>
> - pic_set_irq1(&s->pics[irq >> 3], irq & 7, level);
> - pic_update_irq(s);
> + if (irq >= 0 && irq < PIC_NUM_PINS) {
> + pic_set_irq1(&s->pics[irq >> 3], irq & 7, level);
> + pic_update_irq(s);
> + }
> }
>
> /*
> diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
> index bef9127..e9c7b3f 100644
> --- a/arch/x86/kvm/irq.h
> +++ b/arch/x86/kvm/irq.h
> @@ -30,6 +30,8 @@
> #include "ioapic.h"
> #include "lapic.h"
>
> +#define PIC_NUM_PINS 15
> +
>
16
Also, needs signoff and changelog entry.
--
error compiling committee.c: too many arguments to function
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