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. This patchset is dependent on https://lore.kernel.org/linux-mm/20210616045239.370802-1-aneesh.kumar@xxxxxxxxxxxxx/ Changes from v7: * Split mremap fixes to a separate series Changes from v6: * Update ppc64 flush_tlb_range to invalidate page walk cache. * Add patches to fix race between mremap and page out * Add patch to fix build error with page table levels 2 Changes from v5: * Drop patch mm/mremap: Move TLB flush outside page table lock * Add fixes for race between optimized mremap and page out Changes from v4: * Change function name and arguments based on review feedback. Changes from v3: * Fix build error reported by kernel test robot * Address review feedback. 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 (3): mm/mremap: Allow arch runtime override powerpc/book3s64/mm: Update flush_tlb_range to flush page walk cache powerpc/mm: Enable HAVE_MOVE_PMD support .../include/asm/book3s/64/tlbflush-radix.h | 2 + arch/powerpc/include/asm/tlb.h | 6 +++ arch/powerpc/mm/book3s64/radix_hugetlbpage.c | 8 +++- arch/powerpc/mm/book3s64/radix_tlb.c | 44 ++++++++++++------- arch/powerpc/platforms/Kconfig.cputype | 2 + mm/mremap.c | 15 ++++++- 6 files changed, 58 insertions(+), 19 deletions(-) -- 2.31.1
