From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Wed, 20 Feb 2008 19:47:24 +0000 (-0500)
Subject: KVM: MMU: ignore zapped root pagetables
X-Git-Tag: v2.6.26-rc1~1028^2~100
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2e53d63acba75795aa226febd140f67c58c6a353;p=pandora-kernel.git

KVM: MMU: ignore zapped root pagetables

Mark zapped root pagetables as invalid and ignore such pages during lookup.

This is a problem with the cr3-target feature, where a zapped root table fools
the faulting code into creating a read-only mapping. The result is a lockup
if the instruction can't be emulated.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
---

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