From 0d551bb698e1328f685ae3611c4a4a96f41bef97 Mon Sep 17 00:00:00 2001
From: Avi Kivity <avi@qumranet.com>
Date: Thu, 31 May 2007 15:23:35 +0300
Subject: [PATCH] KVM: Make shadow pte updates atomic

With guest smp, a second vcpu might see partial updates when the first
vcpu services a page fault.  So delay all updates until we have figured
out what the pte should look like.

Note that on i386, this is still not completely atomic as a 64-bit write
will be split into two on a 32-bit machine.

Signed-off-by: Avi Kivity <avi@qumranet.com>
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