Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.50-24

Karsten Wiese
2005-07-15T12:03:19Z

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Am Mittwoch, 13. Juli 2005 02:08 schrieb William Weston:
> On Wed, 13 Jul 2005, Karsten Wiese wrote:
>
> > i've only tested on 2005ish Ahlon64_UP@k8T800: it doesn't need any of the quirks
> > IOAPIC_POSTFLUSH, sis_bug, level-edge cleanup.
> > IOAPIC_POSTFLUSH caused no negative influence neither.
> > i've an io_apic_one.c here, that doesn't have any of the quirks and is stripped down
> > to handle just one ioapic. It runs just fine on PREEMPT_RT.
> > Could be used as a "Do i crash/suffer without the quirks?" test for 1 ioapic equipped machines.
> > Should i post it?
>
> Please do. I'll give it a spin on several machines and let you know how
> it goes ;-}
>
This is it. Apply it on top of -51-30 and 'make oldconfig'.
You'll be asked about the new CONFIG_ONE_IOAPIC. Answering yes,
io_apic_one.c will be used, which is
((io_apic.c minus quirks) minus multi_io_apic_capability)
.
It'll propably crash some machines, as the quirks are there for some reason...
With CONFIG_ONE_IOAPIC unset, you'll get the same kernel as with my
previously sent patch.
have fun :-)

Karsten

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