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mirror_ubuntu-kernels/arch/s390/mm
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Janosch Frank cd4d3d5f21 s390: add 3f program exception handler 
Program exception 3f (secure storage violation) can only be detected
when the CPU is running in SIE with a format 4 state description,
e.g. running a protected guest. Because of this and because user
space partly controls the guest memory mapping and can trigger this
exception, we want to send a SIGSEGV to the process running the guest
and not panic the kernel.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Cc: <stable@vger.kernel.org> # 5.7
Fixes: 084ea4d611 ("s390/mm: add (non)secure page access exceptions handlers")
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-09-14 10:08:07 +02:00
..
cmm.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
dump_pagetables.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
extmem.c s390/extmem: remove stale -ENOSPC comment and handling 2020-07-03 10:49:16 +02:00
fault.c s390: add 3f program exception handler 2020-09-14 10:08:07 +02:00
gmap.c - Allow s390 debug feature to handle finally more than 256 CPU numbers, instead 2020-08-13 12:38:32 -07:00
hugetlbpage.c s390/mm: fix huge pte soft dirty copying 2020-07-09 15:18:23 +02:00
init.c mm/sparse: cleanup the code surrounding memory_present() 2020-08-07 11:33:27 -07:00
kasan_init.c mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
maccess.c s390/maccess: add no DAT mode to kernel_write 2020-06-29 16:26:36 +02:00
Makefile s390/mm: convert to the generic get_user_pages_fast code 2019-04-23 16:30:04 +02:00
mmap.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
page-states.c s390/cmma: reuse kstrtobool for option value parsing 2019-08-26 12:51:18 +02:00
pageattr.c mm: consolidate pte_index() and pte_offset_*() definitions 2020-06-09 09:39:14 -07:00
pgalloc.c mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
pgtable.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
vmem.c s390/vmem: fix vmem_add_range for 4-level paging 2020-08-26 18:07:05 +02:00