powerpc/64: Use array of paca pointers and allocate pacas individually
authorNicholas Piggin <npiggin@gmail.com>
Tue, 13 Feb 2018 15:08:12 +0000 (01:08 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Fri, 30 Mar 2018 12:34:23 +0000 (23:34 +1100)
commitd2e60075a3d4422dc54b919f3b125d8066b839d4
tree0a053b218a2b6645da86b32e75947899158d3c33
parent8e0b634b132752ec3eba50afb952502b1a87d6ba
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>
26 files changed:
arch/powerpc/include/asm/kvm_ppc.h
arch/powerpc/include/asm/lppaca.h
arch/powerpc/include/asm/paca.h
arch/powerpc/include/asm/smp.h
arch/powerpc/kernel/crash.c
arch/powerpc/kernel/head_64.S
arch/powerpc/kernel/machine_kexec_64.c
arch/powerpc/kernel/paca.c
arch/powerpc/kernel/setup_64.c
arch/powerpc/kernel/smp.c
arch/powerpc/kernel/sysfs.c
arch/powerpc/kvm/book3s_hv.c
arch/powerpc/kvm/book3s_hv_builtin.c
arch/powerpc/mm/tlb-radix.c
arch/powerpc/platforms/85xx/smp.c
arch/powerpc/platforms/cell/smp.c
arch/powerpc/platforms/powernv/idle.c
arch/powerpc/platforms/powernv/setup.c
arch/powerpc/platforms/powernv/smp.c
arch/powerpc/platforms/powernv/subcore.c
arch/powerpc/platforms/pseries/hotplug-cpu.c
arch/powerpc/platforms/pseries/lpar.c
arch/powerpc/platforms/pseries/setup.c
arch/powerpc/platforms/pseries/smp.c
arch/powerpc/sysdev/xics/icp-native.c
arch/powerpc/xmon/xmon.c