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SubjectRe: [PATCH v2 0/5] shoot lazy tlbs
I'll ask Andrew to put this in -mm if no objections.

The series now doesn't touch other archs in non-trivial ways, and core code
is functionally not changed much / at all if the option is not selected so
it's actually pretty simple aside from the powerpc change.

Thanks,
Nick

Excerpts from Nicholas Piggin's message of December 14, 2020 4:53 pm:
> This is another rebase, on top of mainline now (don't need the
> asm-generic tree), and without any x86 or membarrier changes.
> This makes the series far smaller and more manageable and
> without the controversial bits.
>
> Thanks,
> Nick
>
> Nicholas Piggin (5):
> lazy tlb: introduce lazy mm refcount helper functions
> lazy tlb: allow lazy tlb mm switching to be configurable
> lazy tlb: shoot lazies, a non-refcounting lazy tlb option
> powerpc: use lazy mm refcount helper functions
> powerpc/64s: enable MMU_LAZY_TLB_SHOOTDOWN
>
> arch/Kconfig | 30 ++++++++++
> arch/arm/mach-rpc/ecard.c | 2 +-
> arch/powerpc/Kconfig | 1 +
> arch/powerpc/kernel/smp.c | 2 +-
> arch/powerpc/mm/book3s64/radix_tlb.c | 4 +-
> fs/exec.c | 4 +-
> include/linux/sched/mm.h | 20 +++++++
> kernel/cpu.c | 2 +-
> kernel/exit.c | 2 +-
> kernel/fork.c | 52 ++++++++++++++++
> kernel/kthread.c | 11 ++--
> kernel/sched/core.c | 88 ++++++++++++++++++++--------
> kernel/sched/sched.h | 4 +-
> 13 files changed, 184 insertions(+), 38 deletions(-)
>
> --
> 2.23.0
>
>

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