Re: [patch] voluntary-preempt-2.6.9-rc1-bk4-Q4

[Ingo Molnar]

* Lee Revell <rlrevell@xxxxxxxxxxx> wrote:

> > > The problem only occurs when CONFIG_PREEMPT_HARDIRQS=y.  Works fine
> > > otherwise.
> > 
> > i suspect it's the generic_synchronize_irq() change. Does -Q4 boot?:
> > 
> >   http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.9-rc1-bk4-Q4
> > 
> > -Q4 reverts this change. (this doesnt solve the problems Scott noticed
> > though.)
> > 
> > another solution would be to boot Q3 with preempt_hardirqs=0 and then
> > turn on threading for all IRQs but the keyboard.
> > 
> 
> Nope, neither of these fixes the problem.

the correct boot parameter is hardirq-preempt=0.

	Ingo
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