tree ff0134e6a0dd55e5066719de73dac85d8ea972fe
parent 82c92ed1357bca22a5d637fbb93dab3eb18a8e8c
author Juergen Gross <jgross@suse.com> 1421039108 +0100
committer David Vrabel <david.vrabel@citrix.com> 1421057380 +0000

xen: correct race in alloc_p2m_pmd()

When allocating a new pmd for the linear mapped p2m list a check is
done for not introducing another pmd when this just happened on
another cpu. In this case the old pte pointer was returned which
points to the p2m_missing or p2m_identity page. The correct value
would be the pointer to the found new page.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>