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Max Filippov b8854cc643 xtensa: disable preemption around cache alias management calls

commit 3a860d165e upstream.

Although cache alias management calls set up and tear down TLB entries
and fast_second_level_miss is able to restore TLB entry should it be
evicted they absolutely cannot preempt each other because they use the
same TLBTEMP area for different purposes.
Disable preemption around all cache alias management calls to enforce
that.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2023-05-16 09:49:32 +09:00

cache.c

xtensa: disable preemption around cache alias management calls

2023-05-16 09:49:32 +09:00

fault.c

mm: do not pass mm_struct into handle_mm_fault

2016-07-26 16:19:19 -07:00

highmem.c

sched/preempt, mm/kmap: Explicitly disable/enable preemption in kmap_atomic_*

2015-05-19 08:39:14 +02:00

init.c

xtensa: fix high memory/reserved memory collision