powerpc/powernv/memtrace: Allow mmaping trace buffers

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Let the memory removed from the linear mapping to be used for the trace
buffers be mmaped. This is a useful way of providing cache-inhibited
memory for the alignment_handler selftest.

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
[mpe: make memtrace_mmap() static as noticed by lkp@intel.com]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210225032108.1458352-1-jniethe5@gmail.com

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Jordan Niethe 2021-02-25 14:21:06 +11:00 • committed by Michael Ellerman

parent acd4dfeb49

commit 08a022ad3d

1 changed files with 17 additions and 1 deletions

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arch/powerpc/platforms/powernv/memtrace.c

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