tree bae7233a155e97c6dd8c986ae5822fb1459f498e
parent c94cae53f9e564484f906a79be5639fc66e8cb02
author Ian Campbell <Ian.Campbell@citrix.com> 1386352556 +0000
committer Stefano Stabellini <stefano.stabellini@eu.citrix.com> 1386352556 +0000

xen: privcmd: do not return pages which we have failed to unmap

This failure represents a hypervisor issue, but if it does occur then nothing
good can come of returning pages which still refer to a foreign owned page
into the general allocation pool.

Instead we are forced to leak them. Log that we have done so.

The potential for failure only exists for autotranslated guest (e.g. ARM and
x86 PVH).

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: David Vrabel <david.vrabel@citrix.com>