linux-kernel - Re: [PATCH] Option to disable AMD C1E (allows dynticks to work)

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Message-ID: <47630521.4060505@redhat.com>
Date:	Fri, 14 Dec 2007 17:35:13 -0500
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Andi Kleen <andi@...stfloor.org>
CC:	Eduard-Gabriel Munteanu <eduard.munteanu@...ux360.ro>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Option to disable AMD C1E (allows dynticks to work)

On 12/14/2007 05:17 AM, Andi Kleen wrote:
>> so do whatever is necessary to enable dynticks. 
> 
> dynticks' main purpose is to save power, but C1e saves more power.
> Disabling C1e for dynticks would be a fairly useless default
> trade off.
> 

What about machines where the BIOS has disabled C1e on CPU 0 but
left it enabled on CPU 1 ??
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