Re: [PATCH] i386: disable local apic timer via command line or dmi quirk

From: Ingo Molnar
Date: Wed Mar 21 2007 - 10:14:14 EST



* 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.
>
> Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

Acked-by: Ingo Molnar <mingo@xxxxxxx>

nice work!

Ingo
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/