On Wed, Sep 24, 2008 at 03:19:47PM +0300, Avi Kivity wrote:
>> Index: kvm/arch/x86/kvm/irq.h
>> ===================================================================
>> --- kvm.orig/arch/x86/kvm/irq.h
>> +++ kvm/arch/x86/kvm/irq.h
>> @@ -42,6 +42,7 @@ struct kvm_kpic_state {
>> u8 irr; /* interrupt request register */
>> u8 imr; /* interrupt mask register */
>> u8 isr; /* interrupt service register */
>> + u8 isr_ack; /* interrupt ack detection */
>> u8 priority_add; /* highest irq priority */
>> u8 irq_base;
>> u8 read_reg_select;
>>
>
> Needs to be cleared by reset
@@ -213,6 +214,7 @@ void kvm_pic_reset(struct kvm_kpic_state
s->irr = 0;
s->imr = 0;
s->isr = 0;
+ s->isr_ack = 0xff;
s->priority_add = 0;
s->irq_base = 0;
s->read_reg_select = 0;
> and by register load from userspace, no?
Isnt that responsability of the guest? Unacked IOAPIC interrupts are not
cleared on register load, are they?
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