powerpc/64s/hash: SLB allocation status bitmaps

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Add 32-entry bitmaps to track the allocation status of the first 32
SLB entries, and whether they are user or kernel entries. These are
used to allocate free SLB entries first, before resorting to the round
robin allocator.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nicholas Piggin 2018-09-15 01:30:53 +10:00 • committed by Michael Ellerman

parent 8fed04d0f6

commit 655deecf67

4 changed files with 59 additions and 17 deletions

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6

arch/powerpc/include/asm/paca.h

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2

arch/powerpc/kernel/asm-offsets.c

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64

arch/powerpc/mm/slb.c

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4

arch/powerpc/xmon/xmon.c

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