Christophe Leroy 95902e6c88 powerpc/mm: Implement STRICT_KERNEL_RWX on PPC32 ...

This patch implements STRICT_KERNEL_RWX on PPC32.

As for CONFIG_DEBUG_PAGEALLOC, it deactivates BAT and LTLB mappings
in order to allow page protection setup at the level of each page.

As BAT/LTLB mappings are deactivated, there might be a performance
impact.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

2017-08-15 22:55:57 +10:00

7.3 KiB

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