[RFC PATCH 0/8] mm/vmalloc: Speed up ioremap, vmalloc and vmap with contiguous memory

[Barry Song]

On Mon, Apr 27, 2026 at 11:05 PM Dev Jain <dev.jain at arm.com> wrote:
>
>
>
> On 08/04/26 8:21 am, Barry Song (Xiaomi) wrote:
[...]
> >
> > Barry Song (Xiaomi) (8):
> >   arm64/hugetlb: Extend batching of multiple CONT_PTE in a single PTE
> >     setup
> >   arm64/vmalloc: Allow arch_vmap_pte_range_map_size to batch multiple
> >     CONT_PTE
> >   mm/vmalloc: Extend vmap_small_pages_range_noflush() to support larger
> >     page_shift sizes
> >   mm/vmalloc: Eliminate page table zigzag for huge vmalloc mappings
> >   mm/vmalloc: map contiguous pages in batches for vmap() if possible
> >   mm/vmalloc: align vm_area so vmap() can batch mappings
> >   mm/vmalloc: Coalesce same page_shift mappings in vmap to avoid pgtable
> >     zigzag
> >   mm/vmalloc: Stop scanning for compound pages after encountering small
> >     pages in vmap
> >
> >  arch/arm64/include/asm/vmalloc.h |   6 +-
> >  arch/arm64/mm/hugetlbpage.c      |  10 ++
> >  mm/vmalloc.c                     | 178 +++++++++++++++++++++++++------
> >  3 files changed, 161 insertions(+), 33 deletions(-)
> >
>
> Hi Barry, have you got the chance to work on v2?

Hi Dev, thanks for the ping.

Yes, I’m getting Wen Jiang (cc’d) to send v2 within the next few days.
The patchset is basically ready, but still under testing.