linux-kernel - Re: [RFC 00/15] x86_64: Optimize percpu accesses

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Message-ID: <48765EEA.1060703@sgi.com>
Date:	Thu, 10 Jul 2008 12:11:38 -0700
From:	Mike Travis <travis@....com>
To:	Christoph Lameter <cl@...ux-foundation.org>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jack Steiner <steiner@....com>, linux-kernel@...r.kernel.org,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: [RFC 00/15] x86_64: Optimize percpu accesses

Christoph Lameter wrote:
...
> The patches are reasonably small. The problem that Mike seems to have is early boot debugging.

Note that the early boot debugging problems go away with gcc-4.2.4.  My
problem now (what I [maybe incorrectly] believe) is stack overflow with
NR_CPUS=4096 and a specific random config file.

Btw, I've completed the first half of splitting the zero_based_fold into
zero_based_only and fold_pda_into_percpu and am testing that now.


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