Merge branch 'stable/e820-3.2.rebased' into uek2-merge

Merge branch 'stable/e820-3.2.rebased' into uek2-merge

* stable/e820-3.2.rebased:
  xen: release all pages within 1-1 p2m mappings
  xen: allow extra memory to be in multiple regions
  xen: allow balloon driver to use more than one memory region
  xen/balloon: simplify test for the end of usable RAM
  xen/balloon: account for pages released during memory setup
  xen/e820: if there is no dom0_mem=, don't tweak extra_pages.
  Revert "xen/e820: if there is no dom0_mem=, don't tweak extra_pages."
  xen/e820: if there is no dom0_mem=, don't tweak extra_pages.
  xen: use maximum reservation to limit amount of usable RAM
  xen: Fix misleading WARN message at xen_release_chunk
  xen: Fix printk() format in xen/setup.c

Conflicts:
	arch/x86/xen/setup.c