mbox series

[v3,0/9] Speedup mremap on ppc64

Message ID 20210330060752.592769-1-aneesh.kumar@linux.ibm.com (mailing list archive)
Headers show
Series Speedup mremap on ppc64 | expand

Message

Aneesh Kumar K.V March 30, 2021, 6:07 a.m. UTC 
This patchset enables MOVE_PMD/MOVE_PUD support on power. This requires
the platform to support updating higher-level page tables without
updating page table entries. This also needs to invalidate the Page Walk
Cache on architecture supporting the same.

Changes from v2:
* switch from using mmu_gather to flush_pte_tlb_pwc_range() 

Changes from v1:
* Rebase to recent upstream
* Fix build issues with tlb_gather_mmu changes



Aneesh Kumar K.V (9):
  selftest/mremap_test: Update the test to handle pagesize other than 4K
  selftest/mremap_test: Avoid crash with static build
  mm/mremap: Use pmd/pud_poplulate to update page table entries
  powerpc/mm/book3s64: Fix possible build error
  powerpc/mm/book3s64: Update tlb flush routines to take a page walk
    cache flush argument
  mm/mremap: Use range flush that does TLB and page walk cache flush
  mm/mremap: Move TLB flush outside page table lock
  mm/mremap: Allow arch runtime override
  powerpc/mm: Enable move pmd/pud

 arch/arc/include/asm/tlb.h                    |   5 +
 arch/arm64/include/asm/tlb.h                  |   6 +
 .../include/asm/book3s/64/tlbflush-radix.h    |  19 +--
 arch/powerpc/include/asm/book3s/64/tlbflush.h |  30 ++++-
 arch/powerpc/include/asm/tlb.h                |   6 +
 arch/powerpc/mm/book3s64/radix_hugetlbpage.c  |   4 +-
 arch/powerpc/mm/book3s64/radix_tlb.c          |  49 ++++----
 arch/powerpc/platforms/Kconfig.cputype        |   2 +
 arch/x86/include/asm/tlb.h                    |   5 +
 mm/mremap.c                                   |  40 ++++--
 tools/testing/selftests/vm/mremap_test.c      | 118 ++++++++++--------
 11 files changed, 187 insertions(+), 97 deletions(-)

Comments

Aneesh Kumar K.V April 9, 2021, 5:48 a.m. UTC | #1 
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> writes:

> This patchset enables MOVE_PMD/MOVE_PUD support on power. This requires
> the platform to support updating higher-level page tables without
> updating page table entries. This also needs to invalidate the Page Walk
> Cache on architecture supporting the same.
>
> Changes from v2:
> * switch from using mmu_gather to flush_pte_tlb_pwc_range() 
>
> Changes from v1:
> * Rebase to recent upstream
> * Fix build issues with tlb_gather_mmu changes
>

Gentle ping. Any objections for this series? 

-aneesh