From: Rusty Russell <rusty@rustcorp.com.au>
Date: Tue, 1 Jan 2008 10:48:36 +0000 (+1100)
Subject: fix lguest rmmod "bad pgd"
X-Git-Tag: v2.6.24-rc7~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=476c6c11a9ee4610ff0e4941e3851729f7caf062;p=pandora-kernel.git

fix lguest rmmod "bad pgd"

After 17d57a9206b4de6ad082ac9f2d2346985abbd2aa ("x86: fix x86-32 early
fixmap initialization.") removing lg.ko caused a printk from vunmap:

	mm/memory.c:115: bad pgd 004b3027.

On the second use after module load, the kernel crashes.

This fixes the immediate problem (accessed and dirty bits not set as
expected in pmd_none_or_clear_bad).  I can't see why this would cause
a crash, but I haven't been able to reproduce it once this is applied.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

Reading git-diff-tree failed