s390/mm: Add huge pmd storage key handling
authorJanosch Frank <frankja@linux.ibm.com>
Fri, 13 Jul 2018 10:28:28 +0000 (11:28 +0100)
committerJanosch Frank <frankja@linux.ibm.com>
Mon, 30 Jul 2018 10:20:18 +0000 (11:20 +0100)
commit637ff9efe5eab419ea7f2bd6f2cf50f3cb69e322
tree735bc3f8c59ec483a53e54242576c6a30263ecd9
parent3afdfca69870963ae01e280732a5ee493a2fcbb3
s390/mm: Add huge pmd storage key handling

Storage keys for guests with huge page mappings have to be managed in
hardware. There are no PGSTEs for PMDs that we could use to retain the
guests's logical view of the key.

Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
arch/s390/mm/pgtable.c