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| author | Nicholas Piggin <npiggin@gmail.com> | 2018-02-13 16:08:20 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-03-30 15:06:44 +0200 |
| commit | 4890aea65ae7b5d424b5020e8be193b08a545990 (patch) | |
| tree | 8b7dd5d5d9f0f994b90dfdceb4796e13028c96b1 /arch/powerpc/kernel/setup_64.c | |
| parent | powerpc/64: Defer paca allocation until memory topology is discovered (diff) | |
| download | linux-4890aea65ae7b5d424b5020e8be193b08a545990.tar.xz linux-4890aea65ae7b5d424b5020e8be193b08a545990.zip | |
powerpc/64: Allocate pacas per node
Per-node allocations are possible on 64s with radix that does
not have the bolted SLB limitation.
Hash would be able to do the same if all CPUs had the bottom of
their node-local memory bolted as well. This is left as an
exercise for the reader.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
[mpe: Add dummy definition of boot_cpuid for !SMP]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/setup_64.c')
| -rw-r--r-- | arch/powerpc/kernel/setup_64.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index dde34d35d1e7..02fa358982e6 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -312,6 +312,10 @@ void __init early_setup(unsigned long dt_ptr) early_init_devtree(__va(dt_ptr)); /* Now we know the logical id of our boot cpu, setup the paca. */ + if (boot_cpuid != 0) { + /* Poison paca_ptrs[0] again if it's not the boot cpu */ + memset(&paca_ptrs[0], 0x88, sizeof(paca_ptrs[0])); + } setup_paca(paca_ptrs[boot_cpuid]); fixup_boot_paca(); |