From: Ingo Molnar <mingo@elte.hu>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Stefan Prechtel <stefan.prechtel@googlemail.com>,
Andi Kleen <ak@suse.de>,
Grzegorz Chwesewicz <grzegorz.chwesewicz@chilan.com>,
linux-kernel@vger.kernel.org, Len Brown <lenb@kernel.org>,
john stultz <johnstul@us.ibm.com>,
Andrew Morton <akpm@linux-foundation.org>,
Adrian Bunk <bunk@stusta.de>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: [PATCH] i386: disable local apic timer via command line or dmi quirk
Date: Wed, 21 Mar 2007 15:09:30 +0100 [thread overview]
Message-ID: <20070321140930.GA5717@elte.hu> (raw)
In-Reply-To: <1174486483.10840.89.camel@localhost.localdomain>
* Thomas Gleixner <tglx@linutronix.de> 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@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
nice work!
Ingo
next prev parent reply other threads:[~2007-03-21 14:13 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-03-19 17:10 BUG lapic: Can't boot on battery (2.6.21-rc{1,2,3,4}) Stefan Prechtel
2007-03-19 17:36 ` Thomas Gleixner
2007-03-19 17:48 ` Thomas Gleixner
2007-03-19 18:53 ` Stefan Prechtel
2007-03-19 19:17 ` Stefan Prechtel
2007-03-19 19:27 ` Thomas Gleixner
2007-03-19 19:49 ` Stefan Prechtel
2007-03-19 20:04 ` Thomas Gleixner
2007-03-19 20:35 ` Stefan Prechtel
2007-03-19 20:56 ` Thomas Gleixner
2007-03-19 21:51 ` Stefan Prechtel
2007-03-20 1:15 ` Thomas Gleixner
2007-03-20 8:23 ` Stefan Prechtel
2007-03-20 16:47 ` Grzegorz Chwesewicz
2007-03-21 9:24 ` Thomas Gleixner
2007-03-21 9:46 ` Andi Kleen
2007-03-21 10:10 ` Thomas Gleixner
2007-03-21 10:37 ` Andi Kleen
2007-03-21 11:14 ` Thomas Gleixner
2007-03-21 12:15 ` Thomas Gleixner
2007-03-21 12:33 ` Thomas Gleixner
2007-03-21 12:42 ` Andi Kleen
2007-03-21 13:04 ` Stefan Prechtel
2007-03-21 13:15 ` Thomas Gleixner
2007-03-21 14:14 ` [PATCH] i386: disable local apic timer via command line or dmi quirk Thomas Gleixner
2007-03-21 14:09 ` Ingo Molnar [this message]
2007-03-21 15:14 ` Grzegorz Chwesewicz
2007-03-22 20:42 ` Stefan Prechtel
2007-03-28 3:28 ` Len Brown
2007-03-28 3:38 ` Len Brown
2007-03-28 9:13 ` Thomas Gleixner
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