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 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 (11): mm/mremap: Fix race between MOVE_PMD mremap and pageout mm/mremap: Fix race between MOVE_PUD mremap and pageout selftest/mremap_test: Update the test to handle pagesize other than 4K selftest/mremap_test: Avoid crash with static build mm/mremap: Convert huge PUD move to separate helper mm/mremap: Don't enable optimized PUD move if page table levels is 2 mm/mremap: Use pmd/pud_poplulate to update page table entries powerpc/mm/book3s64: Fix possible build error 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 | 70 +++++++---- arch/powerpc/platforms/Kconfig.cputype | 2 + include/linux/rmap.h | 13 +- mm/mremap.c | 104 +++++++++++++-- mm/page_vma_mapped.c | 43 ++++--- tools/testing/selftests/vm/mremap_test.c | 118 ++++++++++-------- 9 files changed, 251 insertions(+), 115 deletions(-) -- 2.31.1
