https://github.com/torvalds/linux
Revision 90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3 authored by Benjamin Herrenschmidt on 06 February 2017, 02:05:16 UTC, committed by Michael Ellerman on 09 February 2017, 03:54:33 UTC
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")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
1 parent d7df244
History
Tip revision: 90c1e3c2fafec57fcb55b5d69bcf293b1a5fc8b3 authored by Benjamin Herrenschmidt on 06 February 2017, 02:05:16 UTC
powerpc/mm/radix: Update ERAT flushes when invalidating TLB
Tip revision: 90c1e3c
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