* stable/pvh.v6.1:
x86/xen: Use __pa_symbol instead of __pa on C visible symbols
xen/privcmd: fix condition in privcmd_close()
xen/x86: remove duplicated include from enlighten.c
xen: include correct header for xen_pfn_t definition.
xen: x86 pvh: use XENMEM_add_to_physmap_range for foreign gmfn mappings
xen: arm: implement remap interfaces needed for privcmd mappings.
xen: correctly use xen_pfn_t in remap_domain_mfn_range.
xen: arm: enable balloon driver
xen: balloon: allow PVMMU interfaces to be compiled out
xen/pvh: /dev/xen/privcmd changes.
xen/pvh: balloon and grant changes.