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Re: [Qemu-devel] [PATCH v3 1/5] hpet 'driftfix': add hooks required to d
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From: |
Jan Kiszka |
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Subject: |
Re: [Qemu-devel] [PATCH v3 1/5] hpet 'driftfix': add hooks required to detect coalesced interrupts (x86 apic only) |
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Date: |
Fri, 29 Apr 2011 00:50:30 +0200 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2011-04-28 20:51, Blue Swirl wrote:
> On Thu, Apr 28, 2011 at 5:24 PM, Ulrich Obergfell <address@hidden> wrote:
>> 'target_get_irq_delivered' and 'target_reset_irq_delivered' contain
>> entry addresses of functions that are utilized by update_irq() to
>> detect coalesced interrupts. apic code loads these pointers during
>> initialization.
>
> I'm not so happy with this approach, but probably then the i386
> dependencies can be removed from RTC and it can be compiled only once
> for all targets.
This whole series is really the minimalistic approach. The callbacks
defined here must remain a temporary "shortcut". Just like proper
abstraction of periodic tick compensation for reuse in other timers has
to be added later on. And the limitation to edge-triggered legacy HPET
INTs has to be removed.
Jan
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[Qemu-devel] [PATCH v3 2/5] hpet 'driftfix': add driftfix property to HPETState and DeviceInfo, Ulrich Obergfell, 2011/04/28
[Qemu-devel] [PATCH v3 3/5] hpet 'driftfix': add fields to HPETTimer and VMStateDescription, Ulrich Obergfell, 2011/04/28
[Qemu-devel] [PATCH v3 4/5] hpet 'driftfix': add code in update_irq() to detect coalesced interrupts (x86 apic only), Ulrich Obergfell, 2011/04/28
[Qemu-devel] [PATCH v3 5/5] hpet 'driftfix': add code in hpet_timer() to compensate delayed callbacks and coalesced interrupts, Ulrich Obergfell, 2011/04/28