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

[Dev Jain]

On 28/04/26 8:46 am, Barry Song wrote:
> 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.

Thanks!