powerpc/mm: Move pte_fragment_alloc() to a common location

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In preparation of next patch which generalises the use of
pte_fragment_alloc() for all, this patch moves the related functions
in a place that is common to all subarches.

The 8xx will need that for supporting 16k pages, as in that mode
page tables still have a size of 4k.

Since pte_fragment with only once fragment is not different
from what is done in the general case, we can easily migrate all
subarchs to pte fragments.

Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Christophe Leroy 2018-11-29 14:06:51 +00:00 • committed by Michael Ellerman

parent ddfc20a3b9

commit a95d133c86

5 changed files with 120 additions and 101 deletions

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1

arch/powerpc/include/asm/book3s/64/pgalloc.h

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4

arch/powerpc/mm/Makefile

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15

arch/powerpc/mm/mmu_context_book3s64.c

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85

arch/powerpc/mm/pgtable-book3s64.c

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116

arch/powerpc/mm/pgtable-frag.c

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