selftests/powerpc: Add a test for execute-only memory

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This selftest is designed to cover execute-only protections
on the Radix MMU but will also work with Hash.

The tests are based on those found in pkey_exec_test with modifications
to use the generic mprotect() instead of the pkey variants.

Signed-off-by: Nicholas Miehlbradt <nicholas@linux.ibm.com>
Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220817050640.406017-2-ruscur@russell.cc

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Nicholas Miehlbradt 2022-08-17 15:06:40 +10:00 • committed by Michael Ellerman

parent 395cac7752

commit 98acee3f8d

2 changed files with 233 additions and 1 deletions

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3

tools/testing/selftests/powerpc/mm/Makefile

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231

tools/testing/selftests/powerpc/mm/exec_prot.c

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