From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Sun, 27 Jul 2008 15:45:02 +0000 (-0700)
Subject: xen: fix allocation and use of large ldts
X-Git-Tag: v2.6.28-rc1~699^2^2~43
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a05d2ebab28011c2f3f520833f4bfdd2fd1b9c02;p=pandora-kernel.git

xen: fix allocation and use of large ldts

When the ldt gets to more than 1 page in size, the kernel uses vmalloc
to allocate it.  This means that:

 - when making the ldt RO, we must update the pages in both the vmalloc
   mapping and the linear mapping to make sure there are no RW aliases.

 - we need to use arbitrary_virt_to_machine to compute the machine addr
   for each update

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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