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
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	OpenRISC updates for 5.8	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
Makefile
module.c
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
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
smp.c
stacktrace.c
sync-timer.c
sys_call_table.c
time.c
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
vmlinux.h
vmlinux.lds.S