tree dfbe078fb417e5ae487f37f2e853a1690004b580
parent 5f356497c38448874f2d491cd214e9c283f5592d
author Christophe Leroy <christophe.leroy@c-s.fr> 1515761127 +0100
committer Michael Ellerman <mpe@ellerman.id.au> 1516106833 +1100

powerpc/mm: extend _PAGE_PRIVILEGED to all CPUs

commit ac29c64089b74 ("powerpc/mm: Replace _PAGE_USER with
_PAGE_PRIVILEGED") introduced _PAGE_PRIVILEGED for BOOK3S/64

This patch generalises _PAGE_PRIVILEGED for all CPUs, allowing
to have either _PAGE_PRIVILEGED or _PAGE_USER or both.

PPC_8xx has a _PAGE_SHARED flag which is set for and only for
all non user pages. Lets rename it _PAGE_PRIVILEGED to remove
confusion as it has nothing to do with Linux shared pages.

On BookE, there's a _PAGE_BAP_SR which has to be set for kernel
pages: defining _PAGE_PRIVILEGED as _PAGE_BAP_SR will make
this generic

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