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Gerald Schaefer 962f0af83c s390/mm: fix address space detection in exception handling 
Commit 0aaba41b58 ("s390: remove all code using the access register
mode") removed access register mode from the kernel, and also from the
address space detection logic. However, user space could still switch
to access register mode (trans_exc_code == 1), and exceptions in that
mode would not be correctly assigned.

Fix this by adding a check for trans_exc_code == 1 to get_fault_type(),
and remove the wrong comment line before that function.

Fixes: 0aaba41b58 ("s390: remove all code using the access register mode")
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: <stable@vger.kernel.org> # v4.15+
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
 		2019-06-05 16:04:16 +02:00
..
Makefile s390/mm: convert to the generic get_user_pages_fast code 2019-04-23 16:30:04 +02:00
cmm.c s390/cmm: avoid add_timer on concurrently used timer 2018-07-16 15:45:41 +02:00
dump_pagetables.c kasan: rename kasan_zero_page to kasan_early_shadow_page 2018-12-28 12:11:43 -08:00
extmem.c s390/extmem: print DCSS range with %px 2019-02-21 15:57:25 +01:00
fault.c s390/mm: fix address space detection in exception handling 2019-06-05 16:04:16 +02:00
gmap.c KVM: s390: Features for 4.20 2018-10-04 17:12:45 +02:00
hugetlbpage.c s390/mm: Clear skeys for newly mapped huge guest pmds 2018-07-30 11:20:18 +01:00
init.c mm/memory_hotplug: make __remove_pages() and arch_remove_memory() never fail 2019-05-14 09:47:50 -07:00
kasan_init.c s390/kasan: adapt disabled_wait usage to avoid build error 2019-05-08 15:01:09 +02:00
maccess.c s390/unwind: introduce stack unwind API 2019-05-02 13:54:11 +02:00
mmap.c s390/mmap: take stack_guard_gap into account for mmap_base 2019-02-07 11:57:01 +01:00
page-states.c s390/mm: fix addressing exception after suspend/resume 2018-08-09 08:05:48 +02:00
pageattr.c s390/mm: Clear huge page storage keys on enable_skey 2018-07-30 11:20:18 +01:00
pgalloc.c s390/tlb: Convert to generic mmu_gather 2019-04-03 10:32:57 +02:00
pgtable.c s390/mm: silence compiler warning when compiling without CONFIG_PGSTE 2019-04-10 17:48:28 +02:00
vmem.c s390/kernel: introduce .dma sections 2019-04-29 10:47:10 +02:00