The patch titled
Subject: powerpc/mm: enable HAVE_MOVE_PMD support
has been added to the -mm tree. Its filename is
powerpc-mm-enable-have_move_pmd-support.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/powerpc-mm-enable-have_move_pmd-support.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/powerpc-mm-enable-have_move_pmd-support.patch
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------------------------------------------------------
From: "Aneesh Kumar K.V" <aneesh.kumar@xxxxxxxxxxxxx>
Subject: powerpc/mm: enable HAVE_MOVE_PMD support
mremap HAVE_MOVE_PMD/PUD optimization time comparison for 1GB region:
1GB mremap - Source PTE-aligned, Destination PTE-aligned
mremap time: 2292772ns
1GB mremap - Source PMD-aligned, Destination PMD-aligned
mremap time: 1158928ns
1GB mremap - Source PUD-aligned, Destination PUD-aligned
mremap time: 63886ns
Link: https://lkml.kernel.org/r/20210616045735.374532-4-aneesh.kumar@xxxxxxxxxxxxx
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Joel Fernandes <joel@xxxxxxxxxxxxxxxxx>
Cc: Kalesh Singh <kaleshsingh@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/Kconfig.cputype | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/powerpc/platforms/Kconfig.cputype~powerpc-mm-enable-have_move_pmd-support
+++ a/arch/powerpc/platforms/Kconfig.cputype
@@ -101,6 +101,8 @@ config PPC_BOOK3S_64
select ARCH_ENABLE_THP_MIGRATION if TRANSPARENT_HUGEPAGE
select ARCH_SUPPORTS_HUGETLBFS
select ARCH_SUPPORTS_NUMA_BALANCING
+ select HAVE_MOVE_PMD
+ select HAVE_MOVE_PUD
select IRQ_WORK
select PPC_MM_SLICES
select PPC_HAVE_KUEP
_
Patches currently in -mm which might be from aneesh.kumar@xxxxxxxxxxxxx are
mm-rename-pud_page_vaddr-to-pud_pgtable-and-make-it-return-pmd_t.patch
mm-rename-pud_page_vaddr-to-pud_pgtable-and-make-it-return-pmd_t-fix-2.patch
mm-rename-p4d_page_vaddr-to-p4d_pgtable-and-make-it-return-pud_t.patch
mm-rename-p4d_page_vaddr-to-p4d_pgtable-and-make-it-return-pud_t-fix.patch
selftest-mremap_test-update-the-test-to-handle-pagesize-other-than-4k.patch
selftest-mremap_test-avoid-crash-with-static-build.patch
mm-mremap-convert-huge-pud-move-to-separate-helper.patch
mm-mremap-dont-enable-optimized-pud-move-if-page-table-levels-is-2.patch
mm-mremap-use-pmd-pud_poplulate-to-update-page-table-entries.patch
mm-mremap-hold-the-rmap-lock-in-write-mode-when-moving-page-table-entries.patch
mm-mremap-allow-arch-runtime-override.patch
powerpc-book3s64-mm-update-flush_tlb_range-to-flush-page-walk-cache.patch
powerpc-mm-enable-have_move_pmd-support.patch
