powerpc/64s: remove unnecessary translation cache flushes at boot

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The various translation structure invalidations performed in early boot
when the MMU is off are not required, because everything is invalidated
immediately before a CPU first enables its MMU (see early_init_mmu
and early_init_mmu_secondary).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190902152931.17840-6-npiggin@gmail.com

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Nicholas Piggin 2019-09-03 01:29:30 +10:00 • committed by Michael Ellerman

parent 7e71c428a6

commit 7d805accbe

4 changed files with 7 additions and 13 deletions

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2

arch/powerpc/mm/book3s64/hash_utils.c

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arch/powerpc/mm/book3s64/pgtable.c

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arch/powerpc/mm/book3s64/radix_pgtable.c

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arch/powerpc/platforms/pseries/lpar.c

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