powerpc/64s/exception: reduce page fault unnecessary loads

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This avoids 3 loads in the radix page fault case, 1 load in the
hash fault case, and 2 loads in the hash miss page fault case.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-37-npiggin@gmail.com

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Nicholas Piggin 2019-08-02 20:57:01 +10:00 • committed by Michael Ellerman

parent 05f97d94dd

commit 9b123d1ea2

2 changed files with 19 additions and 23 deletions

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38

arch/powerpc/kernel/exceptions-64s.S

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4

arch/powerpc/mm/book3s64/hash_utils.c

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