Christophe Leroy 4f94b2c746 powerpc/8xx: Use L1 entry APG to handle _PAGE_ACCESSED for CONFIG_SWAP ...

When CONFIG_SWAP is set, the TLB miss handlers have to also take
into account _PAGE_ACCESSED flag. At the moment it is done by
anding _PAGE_ACCESSED into _PAGE_PRESENT using 3 instructions.

This patch uses APG for handling _PAGE_ACCESSED, allowing to
just copy _PAGE_ACCESSED bit into APG field, hence reducing the
action to a single instruction.

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

2018-01-16 23:47:15 +11:00

..

asm

powerpc/8xx: Use L1 entry APG to handle _PAGE_ACCESSED for CONFIG_SWAP

2018-01-16 23:47:15 +11:00

uapi/asm

Merge tag 'powerpc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

2017-11-16 12:47:46 -08:00