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Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet
From: |
Jan Kiszka |
Subject: |
Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups |
Date: |
Mon, 05 Jul 2010 11:07:56 +0200 |
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 |
Avi Kivity wrote:
> On 07/05/2010 10:36 AM, Jan Kiszka wrote:
>>
>>> Assumes that CPU with
>>> lowest index is BSP (that one we can actually guaranty if we want
>>> to).
>>>
>> Well, the generic solution would be returning a bitmap of the CPUs that
>> were affected, but this is impractical. However, at least x86 should be
>> fine with the information "state change also on BSP", e.g. like this:
>> 0 - state change on one or more CPUs, none of them is the BSP
>> 1 - state change on BSP (and possible more CPUs)
>>
>
> What about ack notifiers? Ask the APIC to notify you when an interrupt
> is acked. That allows you to track the BSP, all cpus, or some subset.
> Masking can be seen at the irq controller level.
So, if I understand you correctly, an IRQ state change that is ignored
due to masking would invoke the ack notifier chain as well?
>
> It's more involved, but provides more information.
Well, it requires to establish ack notifier chains in parallel to the
existing IRQ delivery routes. Definitely more invasive.
Jan
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- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, (continued)
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/03
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Blue Swirl, 2010/07/03
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/03
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Paul Brook, 2010/07/04
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Gleb Natapov, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Gleb Natapov, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Avi Kivity, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups,
Jan Kiszka <=
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Gleb Natapov, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Avi Kivity, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Avi Kivity, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Gleb Natapov, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Jan Kiszka, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Avi Kivity, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Gleb Natapov, 2010/07/05
- Re: [Qemu-devel] Re: [Bug 599958] Re: Timedrift problems with Win7: hpet missing time drift fixups, Avi Kivity, 2010/07/05