arm64: mm: Allocate ASIDs in pairs

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In preparation for separate kernel/user ASIDs, allocate them in pairs
for each mm_struct. The bottom bit distinguishes the two: if it is set,
then the ASID will map only userspace.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Tested-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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This commit is contained in:

Will Deacon 2017-08-10 14:10:28 +01:00

parent 27a921e757

commit 0c8ea531b7

2 changed files with 18 additions and 8 deletions

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1

arch/arm64/include/asm/mmu.h

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25

arch/arm64/mm/context.c

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