On Wed, 21 Mar 2007 15:09:30 +0100, Ingo Molnar wrote
> * Thomas Gleixner <tglx@xxxxxxxxxxxxx> wrote:
>
> > The local APIC timer stops to work in deeper C-States. This is handled
> > by the ACPI code and a broadcast mechanism in the clockevents / tick
> > managment code.
> >
> > Some systems do not expose the deeper C-States to the kernel, but
> > switch into deeper C-States behind the kernels back. This delays the
> > local apic timer interrupts for ever and makes the systems unusable.
> >
> > Add a command line option to disable the local apic timer and a dmi
> > quirk for known broken systems.
Confirming that my machine on 2.6-git with this patch works just like on
2.6.20. Great work.
--
Greetings - Grzegorz Chwesewicz