tree 6f77bf668e76725710aae5126054eebd5913d319
parent 1afb7f809bfb8fad9eec9419f3dfd75cee746ebd
author Kumar Gala <galak@kernel.crashing.org> 1216156345 -0500
committer Kumar Gala <galak@kernel.crashing.org> 1222291780 -0500

powerpc: Introduce local (non-broadcast) forms of tlb invalidates

Introduced a new set of low level tlb invalidate functions that do not
broadcast invalidates on the bus:

_tlbil_all - invalidate all
_tlbil_pid - invalidate based on process id (or mm context)
_tlbil_va  - invalidate based on virtual address (ea + pid)

On non-SMP configs _tlbil_all should be functionally equivalent to _tlbia and
_tlbil_va should be functionally equivalent to _tlbie.

The intent of this change is to handle SMP based invalidates via IPIs instead
of broadcasts as the mechanism scales better for larger number of cores.

On e500 (fsl-booke mmu) based cores move to using MMUCSR for invalidate alls
and tlbsx/tlbwe for invalidate virtual address.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>