linux-kernel - Re: [PATCH 6/8] Allow per-cpu variables to be page-aligned

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Message-ID: <45EE0AF7.70502@zytor.com>
Date:	Tue, 06 Mar 2007 16:44:39 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Rusty Russell <rusty@...tcorp.com.au>
CC:	Ingo Molnar <mingo@...e.hu>,
	lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Zachary Amsden <zach@...are.com>,
	Jeremy Fitzhardinge <jeremy@...source.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...e.de>
Subject: Re: [PATCH 6/8] Allow per-cpu variables to be page-aligned

Rusty Russell wrote:
> 
> AFAICT, we could save the wasted partial page in three ways: by trying
> to link it first, if it's only a case of one file, by having a special
> page-aligned percpu data section, or by having a smarter linker.
> 

We already do the second of those for conventional data, so it would 
make sense for percpu as well.  Smarter linker would be better, but ugh, 
I don't see that happening any time soon.

	-hpa
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