Stafford Horne 313a5257b8 openrisc: fix boot oops when DEBUG_VM is enabled ...

Since v5.8-rc1 OpenRISC Linux fails to boot when DEBUG_VM is enabled.
This has been bisected to commit 42fc541404 ("mmap locking API: add
mmap_assert_locked() and mmap_assert_write_locked()").

The added locking checks exposed the issue that OpenRISC was not taking
this mmap lock when during page walks for DMA operations.  This patch
locks and unlocks the mmap lock for page walking.

Link: http://lkml.kernel.org/r/20200617090247.1680188-1-shorne@gmail.com
Fixes: 42fc541404 ("mmap locking API: add mmap_assert_locked() and mmap_assert_write_locked()"
Signed-off-by: Stafford Horne <shorne@gmail.com>
Reviewed-by: Michel Lespinasse <walken@google.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Steven Price <steven.price@arm.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2020-06-26 00:27:36 -07:00

..

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

asm-offsets.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

dma.c

openrisc: fix boot oops when DEBUG_VM is enabled

2020-06-26 00:27:36 -07:00

entry.S

Merge tag 'for-linus' of git://github.com/openrisc/linux

2020-06-13 10:54:09 -07:00

head.S

mm: reorder includes after introduction of linux/pgtable.h

2020-06-09 09:39:13 -07:00

irq.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

Makefile

Merge tag 'for-linus' of git://github.com/openrisc/linux

2017-11-13 12:12:00 -08:00

module.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

or32_ksyms.c

mm: reorder includes after introduction of linux/pgtable.h

2020-06-09 09:39:13 -07:00

process.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

prom.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

ptrace.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

setup.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

signal.c

Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2019-07-08 21:48:15 -07:00

smp.c

openrisc: use mmgrab

2020-01-31 22:21:21 +09:00

stacktrace.c

openrisc: support framepointers and STACKTRACE_SUPPORT

2017-11-03 14:01:15 +09:00

sync-timer.c

openrisc: add tick timer multi-core sync logic

2017-11-03 14:01:16 +09:00

sys_call_table.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

time.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30 11:26:32 -07:00

traps.c

mm: don't include asm/pgtable.h if linux/mm.h is already included

2020-06-09 09:39:13 -07:00

unwinder.c

openrisc: support framepointers and STACKTRACE_SUPPORT

2017-11-03 14:01:15 +09:00

vmlinux.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

vmlinux.lds.S

vmlinux.lds.h: Replace RW_DATA_SECTION with RW_DATA

2019-11-04 15:57:41 +01:00