From: Jan Beulich <jbeulich@novell.com>
Date: Wed, 6 May 2009 12:06:47 +0000 (+0100)
Subject: x86-64: finish cleanup_highmaps()'s job wrt. _brk_end
X-Git-Tag: v2.6.30-rc5~2^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=498343967613183611ac37dccb2846496d954c06;p=pandora-kernel.git

x86-64: finish cleanup_highmaps()'s job wrt. _brk_end

With the introduction of the .brk section, special care must be taken
that no unused page table entries remain if _brk_end and _end are
separated by a 2M page boundary. cleanup_highmap() runs very early and
hence cannot take care of that, hence potential entries needing to be
removed past _brk_end must be cleared once the brk allocator has done
its job.

[ Impact: avoids undesirable TLB aliases ]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
---

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