powerpc/vas: Create take/drop pid and mm reference functions

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Take pid and mm references when each window opens and drops during
close. This functionality is needed for powerNV and pseries. So
this patch defines the existing code as functions in common book3s
platform vas-api.c

Signed-off-by: Haren Myneni <haren@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/2fa40df962250a737c804e58202924717b39e381.camel@linux.ibm.com

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Haren Myneni 2021-06-17 13:31:43 -07:00 • committed by Michael Ellerman

parent 1a0d0d5ed5

commit 3856aa542d

5 changed files with 91 additions and 59 deletions

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40

arch/powerpc/include/asm/vas.h

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39

arch/powerpc/platforms/book3s/vas-api.c

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10

arch/powerpc/platforms/powernv/vas-fault.c

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55

arch/powerpc/platforms/powernv/vas-window.c

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6

arch/powerpc/platforms/powernv/vas.h

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