From: Izik Eidus <izike@qumranet.com>
Date: Tue, 16 Oct 2007 12:43:46 +0000 (+0200)
Subject: KVM: MMU: Keep a reverse mapping of non-writable translations
X-Git-Tag: v2.6.25-rc1~1138^2~203
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9647c14c98687d0abf5197e74b9d1448ab6ebb95;p=pandora-kernel.git

KVM: MMU: Keep a reverse mapping of non-writable translations

The current kvm mmu only reverse maps writable translation.  This is used
to write-protect a page in case it becomes a pagetable.

But with swapping support, we need a reverse mapping of read-only pages as
well:  when we evict a page, we need to remove any mapping to it, whether
writable or not.

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

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