Re: [PATCH -v4 0/2] arm, tlbflush: avoid TLBI broadcast if page reused in write fault

Huang, Ying
2025-11-06T01:01:33Z

Huang Ying <ying.huang@linux.alibaba.com> writes:

> This series is to optimize the system performance via avoiding TLBI
> broadcast if page is reused in the write protect fault handler. More
> details of the background and the test results can be found in [2/2].
>
> Changelog:
>
> v4:
>
> - Collected Reviewed-by and Acked-by, Thanks Lorenzo, David, Ryan, and
> Barry.
>
> v3:
>
> - Various code cleanup and improved design and document in [1/2],
> Thanks Lorenzo and David's comments!
> - Fixed a typo and improved function interface in [2/2], Thanks Ryan's
> comments!
>
> v2:
>
> - Various code cleanup in [1/2], Thanks David's comments!
> - Remove unnecessary __local_flush_tlb_page_nosync() in [2/2], Thanks Ryan's comments!
> - Add missing contpte processing, Thanks Rayn and Catalin's comments!
>
> Huang Ying (2):
> mm: add spurious fault fixing support for huge pmd
> arm64, tlbflush: don't TLBI broadcast if page reused in write fault
>
> arch/arm64/include/asm/pgtable.h | 14 ++++---
> arch/arm64/include/asm/tlbflush.h | 56 ++++++++++++++++++++++++++++
> arch/arm64/mm/contpte.c | 3 +-
> arch/arm64/mm/fault.c | 2 +-
> include/linux/huge_mm.h | 2 +-
> include/linux/pgtable.h | 4 ++
> mm/huge_memory.c | 33 ++++++++++------
> mm/internal.h | 2 +-
> mm/memory.c | 62 +++++++++++++++++++++++--------
> 9 files changed, 140 insertions(+), 38 deletions(-)

Hi, Catalin,

Do you have time to take a look at this series? Are there some remain
issues?

---
Best Regards,
Huang, Ying