From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Fri, 22 Oct 2010 16:18:17 +0000 (-0200)
Subject: KVM: MMU: flush TLBs on writable -> read-only spte overwrite
X-Git-Tag: v2.6.38-rc1~244^2~118
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7905d9a5ad7a83f1c1c00559839857ab90afbdfc;p=pandora-kernel.git

KVM: MMU: flush TLBs on writable -> read-only spte overwrite

This can happen in the following scenario:

vcpu0			vcpu1
read fault
gup(.write=0)
			gup(.write=1)
			reuse swap cache, no COW
			set writable spte
			use writable spte
set read-only spte

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

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