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Commit b87ac021 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
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powerpc: Introduce msgsnd/doorbell barrier primitives 



POWER9 changes requirements and adds new instructions for
synchronization.

Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent b866cc21
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