(subset) [PATCH v2 00/16] Add support for DAX vmemmap optimization for ppc64

Michael Ellerman patch-notifications at ellerman.id.au
Mon Jul 3 15:26:58 AEST 2023

On Fri, 16 Jun 2023 16:38:10 +0530, Aneesh Kumar K.V wrote:
> 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"
> [...]

Patch 1, 3, 4 and 5 applied to powerpc/next.

[01/16] powerpc/mm/book3s64: Use pmdp_ptep helper instead of typecasting.
[03/16] powerpc/book3s64/mm: Fix DirectMap stats in /proc/meminfo
[04/16] powerpc/book3s64/mm: Use PAGE_KERNEL instead of opencoding
[05/16] powerpc/mm/dax: Fix the condition when checking if altmap vmemap can cross-boundary


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