From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
To: linux-mm@kvack.org, akpm@linux-foundation.org,
mpe@ellerman.id.au, linuxppc-dev@lists.ozlabs.org,
npiggin@gmail.com, christophe.leroy@csgroup.eu
Cc: Oscar Salvador <osalvador@suse.de>,
Mike Kravetz <mike.kravetz@oracle.com>,
Dan Williams <dan.j.williams@intel.com>,
Joao Martins <joao.m.martins@oracle.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Muchun Song <muchun.song@linux.dev>,
Will Deacon <will@kernel.org>
Subject: Re: [PATCH v2 00/16] Add support for DAX vmemmap optimization for ppc64
Date: Sat, 24 Jun 2023 20:22:27 +0530 [thread overview]
Message-ID: <87edm0x68k.fsf@linux.ibm.com> (raw)
In-Reply-To: <20230616110826.344417-1-aneesh.kumar@linux.ibm.com>
Hi Andrew,
"Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> writes:
> This patch series implements changes required to support DAX vmemmap
> optimization for ppc64. The vmemmap optimization is only enabled with radix MMU
> translation and 1GB PUD mapping with 64K page size. The patch series also split
> hugetlb vmemmap optimization as a separate Kconfig variable so that
> architectures can enable DAX vmemmap optimization without enabling hugetlb
> vmemmap optimization. This should enable architectures like arm64 to enable DAX
> vmemmap optimization while they can't enable hugetlb vmemmap optimization. More
> details of the same are in patch "mm/vmemmap optimization: Split hugetlb and
> devdax vmemmap optimization"
>
> Changes from V1:
> * Fix make htmldocs warning
> * Fix vmemmap allocation bugs with different alignment values.
> * Correctly check for section validity to before we free vmemmap area
>
> Aneesh Kumar K.V (16):
> powerpc/mm/book3s64: Use pmdp_ptep helper instead of typecasting.
> powerpc/book3s64/mm: mmu_vmemmap_psize is used by radix
> powerpc/book3s64/mm: Fix DirectMap stats in /proc/meminfo
> powerpc/book3s64/mm: Use PAGE_KERNEL instead of opencoding
> powerpc/mm/dax: Fix the condition when checking if altmap vmemap can
> cross-boundary
> mm/hugepage pud: Allow arch-specific helper function to check huge
> page pud support
> mm: Change pudp_huge_get_and_clear_full take vm_area_struct as arg
> mm/vmemmap: Improve vmemmap_can_optimize and allow architectures to
> override
> mm/vmemmap: Allow architectures to override how vmemmap optimization
> works
> mm: Add __HAVE_ARCH_PUD_SAME similar to __HAVE_ARCH_P4D_SAME
> mm/huge pud: Use transparent huge pud helpers only with
> CONFIG_TRANSPARENT_HUGEPAGE
> mm/vmemmap optimization: Split hugetlb and devdax vmemmap optimization
> powerpc/book3s64/mm: Enable transparent pud hugepage
> powerpc/book3s64/vmemmap: Switch radix to use a different vmemmap
> handling function
> powerpc/book3s64/radix: Add support for vmemmap optimization for radix
> powerpc/book3s64/radix: Remove mmu_vmemmap_psize
>
> Documentation/mm/vmemmap_dedup.rst | 1 +
> Documentation/powerpc/index.rst | 1 +
> Documentation/powerpc/vmemmap_dedup.rst | 101 +++
> arch/loongarch/Kconfig | 2 +-
> arch/powerpc/Kconfig | 1 +
> arch/powerpc/include/asm/book3s/64/pgtable.h | 156 ++++-
> arch/powerpc/include/asm/book3s/64/radix.h | 47 ++
> .../include/asm/book3s/64/tlbflush-radix.h | 2 +
> arch/powerpc/include/asm/book3s/64/tlbflush.h | 8 +
> arch/powerpc/include/asm/pgtable.h | 3 +
> arch/powerpc/mm/book3s64/pgtable.c | 78 +++
> arch/powerpc/mm/book3s64/radix_pgtable.c | 577 ++++++++++++++++--
> arch/powerpc/mm/book3s64/radix_tlb.c | 7 +
> arch/powerpc/mm/init_64.c | 39 +-
> arch/powerpc/platforms/Kconfig.cputype | 1 +
> arch/riscv/Kconfig | 2 +-
> arch/x86/Kconfig | 3 +-
> drivers/nvdimm/pfn_devs.c | 2 +-
> fs/Kconfig | 2 +-
> include/linux/mm.h | 32 +-
> include/linux/pgtable.h | 11 +-
> include/trace/events/thp.h | 17 +
> mm/Kconfig | 5 +-
> mm/debug_vm_pgtable.c | 2 +-
> mm/huge_memory.c | 2 +-
> mm/mm_init.c | 2 +-
> mm/mremap.c | 2 +-
> mm/sparse-vmemmap.c | 3 +
> 28 files changed, 1032 insertions(+), 77 deletions(-)
> create mode 100644 Documentation/powerpc/vmemmap_dedup.rst
>
Michael Ellerman merged some of the ppc64 patches. How do
you like to merge the mm changes? Do you like a repost of patches 6-12?
-aneesh
next prev parent reply other threads:[~2023-06-24 14:53 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-16 11:08 Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 01/16] powerpc/mm/book3s64: Use pmdp_ptep helper instead of typecasting Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 02/16] powerpc/book3s64/mm: mmu_vmemmap_psize is used by radix Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 03/16] powerpc/book3s64/mm: Fix DirectMap stats in /proc/meminfo Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 04/16] powerpc/book3s64/mm: Use PAGE_KERNEL instead of opencoding Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 05/16] powerpc/mm/dax: Fix the condition when checking if altmap vmemap can cross-boundary Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 06/16] mm/hugepage pud: Allow arch-specific helper function to check huge page pud support Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 07/16] mm: Change pudp_huge_get_and_clear_full take vm_area_struct as arg Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 08/16] mm/vmemmap: Improve vmemmap_can_optimize and allow architectures to override Aneesh Kumar K.V
2023-06-20 11:53 ` Joao Martins
2023-06-20 14:29 ` Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 09/16] mm/vmemmap: Allow architectures to override how vmemmap optimization works Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 10/16] mm: Add __HAVE_ARCH_PUD_SAME similar to __HAVE_ARCH_P4D_SAME Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 11/16] mm/huge pud: Use transparent huge pud helpers only with CONFIG_TRANSPARENT_HUGEPAGE Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 12/16] mm/vmemmap optimization: Split hugetlb and devdax vmemmap optimization Aneesh Kumar K.V
2023-06-28 1:09 ` Ritesh Harjani
2023-06-28 3:01 ` Aneesh Kumar K V
2023-06-16 11:08 ` [PATCH v2 13/16] powerpc/book3s64/mm: Enable transparent pud hugepage Aneesh Kumar K.V
2023-06-28 1:23 ` Ritesh Harjani
2023-06-28 3:32 ` Aneesh Kumar K V
2023-06-16 11:08 ` [PATCH v2 14/16] powerpc/book3s64/vmemmap: Switch radix to use a different vmemmap handling function Aneesh Kumar K.V
2023-06-28 1:33 ` Ritesh Harjani
2023-06-28 3:37 ` Aneesh Kumar K V
2023-06-16 11:08 ` [PATCH v2 15/16] powerpc/book3s64/radix: Add support for vmemmap optimization for radix Aneesh Kumar K.V
2023-06-16 11:08 ` [PATCH v2 16/16] powerpc/book3s64/radix: Remove mmu_vmemmap_psize Aneesh Kumar K.V
2023-06-18 11:54 ` [PATCH v2 00/16] Add support for DAX vmemmap optimization for ppc64 Sachin Sant
2023-06-24 14:52 ` Aneesh Kumar K.V [this message]
2023-06-24 17:22 ` Andrew Morton
2023-07-03 5:26 ` (subset) " Michael Ellerman
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