tree 8baaa55d1ac71d0d18a1d932e561af6751c39c61
parent 9b7ff0c6586bc0541ebcd1ff6773b11a49f1a058
author Nicholas Piggin <npiggin@gmail.com> 1492078581 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1492090473 +1000

powerpc: Change the doorbell IPI calling convention

Change the doorbell callers to know about their msgsnd addressing,
rather than have them set a per-cpu target data tag at boot that gets
sent to the cause_ipi functions. The data is only used for doorbell IPI
functions, no other IPI types, so it makes sense to keep that detail
local to doorbell.

Have the platform code understand doorbell IPIs, rather than the
interrupt controller code understand them. Platform code can look at
capabilities it has available and decide which to use.

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