Benjamin Herrenschmidt 3433972d04 powerpc/mm/radix: Update ERAT flushes when invalidating TLB
commit 90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3 upstream.

Three tiny changes to the ERAT flushing logic: First don't make
it depend on DD1. It hasn't been decided yet but we might run
DD2 in a mode that also requires explicit flushes for performance
reasons so make it unconditional. We also add a missing isync, and
finally remove the flush from _tlbiel_va as it is only necessary
for congruence-class invalidations (PID, LPID and full TLB), not
targetted invalidations.

Fixes: 96ed1fe511a8 ("powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1")
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-14 15:25:40 -08:00
..
2016-10-27 18:43:42 -07:00
2016-10-30 10:13:55 +01:00
2016-10-19 08:39:47 -07:00