[PATCH 0/2] powerpc/64s: fix for CPU hotplug vs mm_cpumask bug

Nicholas Piggin
2020-11-20T02:58:28Z

This fixes a race in powerpc mm_cpumask code, I hope the core kernel
patch looks okay and we could take it through the powerpc tree with
an ack from someone (Peter or Thomas, perhaps?)

Thanks,
Nick

Nicholas Piggin (2):
kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
powerpc/64s: Trim offlined CPUs from mm_cpumasks

arch/powerpc/include/asm/book3s/64/mmu.h | 12 ++++++++++++
arch/powerpc/mm/book3s64/mmu_context.c | 20 ++++++++++++++++++++
arch/powerpc/platforms/powermac/smp.c | 2 ++
arch/powerpc/platforms/powernv/smp.c | 3 +++
arch/powerpc/platforms/pseries/hotplug-cpu.c | 3 +++
kernel/cpu.c | 6 +++++-
6 files changed, 45 insertions(+), 1 deletion(-)

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2.23.0