tree 70d735a944f96bfb85dc6408ce472859d656e548
parent 0b34a166f291d255755be46e43ed5497cdd194f2
author Malcolm Crossley <malcolm.crossley@citrix.com> 1443436612 +0100
committer David Vrabel <david.vrabel@citrix.com> 1443459818 +0100

x86/xen: Do not clip xen_e820_map to xen_e820_map_entries when sanitizing map

Sanitizing the e820 map may produce extra E820 entries which would result in
the topmost E820 entries being removed. The removed entries would typically
include the top E820 usable RAM region and thus result in the domain having
signicantly less RAM available to it.

Fix by allowing sanitize_e820_map to use the full size of the allocated E820
array.

Signed-off-by: Malcolm Crossley <malcolm.crossley@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>