Re: [Qemu-devel] [PATCH v2] Change RTC time drift IRQ re-injection

[Gleb Natapov]

On Wed, Apr 22, 2009 at 03:23:46PM -0500, Anthony Liguori wrote:
> Gleb Natapov wrote:
>> Currently IRQ are reinjected as soon as they are acknowledged to
>> the RTC, but Windows sometimes do acknowledgement in a loop with
>> global interrupt disabled waiting for interrupt to be cleared and
>> it does not mask RTC vector in PIC/APIC while doing this. In such
>> situation interrupt injection always fails and RTC interrupt is never
>> cleared.
>>
>> Instead of reinjecting coalesced IRQs on acknowledgement the patch below
>> reinjects them by accelerating RTC clock a bit. This way RTC interrupt
>> is not constantly raced after coalesced interrupt.
>>
>> Signed-off-by: Gleb Natapov <address@hidden>
>>   
>
> Applied, but...
>
>> @@ -536,6 +563,7 @@ static int rtc_load_td(QEMUFile *f, void *opaque, int 
>> version_id)
>>       s->irq_coalesced = qemu_get_be32(f);
>>      s->period = qemu_get_be32(f);
>> +    rtc_coalesced_timer_update(s)
>>      return 0;
>>  }
>>  #endif
> You were missing a ';'.  I added it.
>
Wow :(. I compiled it and even tested. Honestly! Something on the
internet eats semicolons.


--
                        Gleb.