Subject: Re: [PATCH 0/4] powerpc/64s: Fix for radix TLB invalidation bug

From: "Aneesh Kumar K.V" <[email-masked]>
Date: Thu, 26 Nov 2020 16:06:47 +0530

Nicholas Piggin <[email-masked]> writes:

> This fixes a tricky bug that was noticed by TLB multi-hits in a guest
> stress testing CPU hotplug, but TLB invalidation means any kind of
> data corruption is possible.
>
> Thanks,
> Nick
>
> Nicholas Piggin (4):
>   powerpc/64s: Fix hash ISA v3.0 TLBIEL instruction generation
>   powerpc/64s/pseries: Fix hash tlbiel_all_isa300 for guest kernels
>   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/hash_native.c       | 23 +++++++++++++-------
>  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 ++++-
>  7 files changed, 60 insertions(+), 9 deletions(-)
>
You can add for the series

Reviewed-by: Aneesh Kumar K.V <[email-masked]>

-aneesh