powerpc: Use 64k io pages when we never see an HEA

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When we never get around to seeing an HEA ethernet adapter, there's
no point in restricting ourselves to 4k IO page size.

This speeds up IO maps when CONFIG_IBMEBUS is disabled.

[ Updated the test to also lift the restriction on arch 2.07
  (Power 8) which cannot have an HEA
 -- BenH ]

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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Alexander Graf 2014-04-01 15:46:05 +02:00 • committed by Benjamin Herrenschmidt

parent 00f554fade

commit 9048e648bc

1 changed files with 22 additions and 3 deletions

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arch/powerpc/mm/hash_utils_64.c

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