From: Roedel, Joerg <Joerg.Roedel@amd.com>
Date: Wed, 20 Apr 2011 13:33:16 +0000 (+0200)
Subject: KVM: MMU: Make cmpxchg_gpte aware of nesting too
X-Git-Tag: v3.0-rc1~350^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a78484c60e35555d6e0e5b1eb83d4913621c59fb;p=pandora-kernel.git

KVM: MMU: Make cmpxchg_gpte aware of nesting too

This patch makes the cmpxchg_gpte() function aware of the
difference between l1-gfns and l2-gfns when nested
virtualization is in use.  This fixes a potential
data-corruption problem in the l1-guest and makes the code
work correct (at least as correct as the hardware which is
emulated in this code) again.

Cc: stable@kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

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