xen: don't map missing memory
authorJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Tue, 31 Aug 2010 21:06:22 +0000 (14:06 -0700)
committerJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Fri, 22 Oct 2010 19:57:26 +0000 (12:57 -0700)
When setting up a pte for a missing pfn (no matching mfn), just create
an empty pte rather than a junk mapping.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

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