Re: Real-Time Preemption, -RT-2.6.12-final-V0.7.51-08

[Ingo Molnar]

* William Weston <weston@xxxxxxxxx> wrote:

> On Thu, 7 Jul 2005, Ingo Molnar wrote:
> 
> > > Without the last two chunks of this patch, the UP Athlon box locks up 
> > > hard as soon as jackd is started up.
> > 
> > hm, do you have CONFIG_PCI_MSI enabled by any chance?
> 
> I've never enabled CONFIG_PCI_MSI.  What's your experience when it 
> comes to stability and performance?

it's really not needed unless you have PCI-X hardware, but it sometimes 
gets enabled and it had IRQ handling bugs under PREEMPT_HARDIRQS (and 
PREEMPT_RT), which i fixed in the -51-12 patch. But if you didnt have it 
enabled then there's no IO-APIC change affecting your config.

	Ingo
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