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From: Anthony Liguori <aliguori@us.ibm.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH v2] Change RTC time drift IRQ re-injection
Date: Wed, 22 Apr 2009 15:23:46 -0500	[thread overview]
Message-ID: <49EF7CD2.5080001@us.ibm.com> (raw)
In-Reply-To: <20090421082100.GB10126@redhat.com>

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 <gleb@redhat.com>
>   

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.

-- 
Regards,

Anthony Liguori

  reply	other threads:[~2009-04-22 20:23 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-21  8:21 [Qemu-devel] [PATCH v2] Change RTC time drift IRQ re-injection Gleb Natapov
2009-04-22 20:23 ` Anthony Liguori [this message]
2009-04-22 20:28   ` Gleb Natapov

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