tree 4cf3f9961c53c4a2b09f96c7840e3542f1b1a0cd
parent bc33cfdb0bb84d9e4b125a617a437c29ddcac4d9
author Jordan Niethe <jniethe5@gmail.com> 1623202468 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1624274001 +1000

powerpc/bpf: Write protect JIT code

Add the necessary call to bpf_jit_binary_lock_ro() to remove write and
add exec permissions to the JIT image after it has finished being
written.

Without CONFIG_STRICT_MODULE_RWX the image will be writable and
executable until the call to bpf_jit_binary_lock_ro().

Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210609013431.9805-7-jniethe5@gmail.com