On Fri, 2019-08-23 at 09:56:21 UTC, Christophe Leroy wrote:
> Commit d2f15e0979ee ("powerpc/32: always populate page tables for
> Abatron BDI.") wrongly sets page tables for any PPC32 for using BDI,
> and does't update them after init (remove RX on init section, set
> text and rodata read-only)
>
> Only the 8xx requires page tables to be populated for using the BDI.
> They also need to be populated in order to see the mappings in
> /sys/kernel/debug/kernel_page_tables
>
> On BOOK3S_32, pages that are not mapped by page tables are mapped
> by BATs. The BDI knows BATs and they can be viewed in
> /sys/kernel/debug/powerpc/block_address_translation
>
> Only set pagetables for RAM and IMMR on the 8xx and properly update
> them at the end of init.
>
> Signed-off-by: Christophe Leroy <christophe.le...@c-s.fr>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/a2227a27774328507a5c2335a6dd600c079d1ff5
cheers
