From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Wed, 28 May 2008 14:02:14 +0000 (+0100)
Subject: build: add __page_aligned_data and __page_aligned_bss
X-Git-Tag: v2.6.27-rc1~1106^2~241
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7bf0bd5e6af7fe69342dabf2a3b721f0163469a;p=pandora-kernel.git

build: add __page_aligned_data and __page_aligned_bss

Making a variable page-aligned by using
__attribute__((section(".data.page_aligned"))) is fragile because if
sizeof(variable) is not also a multiple of page size, it leaves
variables in the remainder of the section unaligned.

This patch introduces two new qualifiers, __page_aligned_data and
__page_aligned_bss to set the section *and* the alignment of
variables.  This makes page-aligned variables more robust because the
linker will make sure they're aligned properly.  Unfortunately it
requires *all* page-aligned data to use these macros...

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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