tree 0a053b218a2b6645da86b32e75947899158d3c33
parent 8e0b634b132752ec3eba50afb952502b1a87d6ba
author Nicholas Piggin <npiggin@gmail.com> 1518534492 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1522413263 +1100

powerpc/64: Use array of paca pointers and allocate pacas individually

Change the paca array into an array of pointers to pacas. Allocate
pacas individually.

This allows flexibility in where the PACAs are allocated. Future work
will allocate them node-local. Platforms that don't have address limits
on PACAs would be able to defer PACA allocations until later in boot
rather than allocate all possible ones up-front then freeing unused.

This is slightly more overhead (one additional indirection) for cross
CPU paca references, but those aren't too common.

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