From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Thu, 22 Sep 2011 08:57:55 +0000 (+0800)
Subject: KVM: MMU: fix detecting misaligned accessed
X-Git-Tag: v3.3-rc1~131^2~63
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5d9ca30e96f567b67a36727aa4ebb34911a2b84a;p=pandora-kernel.git

KVM: MMU: fix detecting misaligned accessed

Sometimes, we only modify the last one byte of a pte to update status bit,
for example, clear_bit is used to clear r/w bit in linux kernel and 'andb'
instruction is used in this function, in this case, kvm_mmu_pte_write will
treat it as misaligned access, and the shadow page table is zapped

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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