Re: [PATCH v3 10/11] mm/vmalloc: Enter lazy mmu mode while manipulating vmalloc ptes

[Catalin Marinas]

On Tue, Mar 04, 2025 at 03:04:40PM +0000, Ryan Roberts wrote:
> Wrap vmalloc's pte table manipulation loops with
> arch_enter_lazy_mmu_mode() / arch_leave_lazy_mmu_mode(). This provides
> the arch code with the opportunity to optimize the pte manipulations.
> 
> Note that vmap_pfn() already uses lazy mmu mode since it delegates to
> apply_to_page_range() which enters lazy mmu mode for both user and
> kernel mappings.
> 
> These hooks will shortly be used by arm64 to improve vmalloc
> performance.
> 
> Signed-off-by: Ryan Roberts <ryan.roberts@xxxxxxx>

Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>