Re: [PATCH v5 22/25] mm: Add pte_batch_hint() to reduce scanning in folio_pte_batch()

On 12.02.24 16:47, Ryan Roberts wrote: On 12/02/2024 13:43, David Hildenbrand wrote: On 02.02.24 09:07, Ryan Roberts wrote: Some architectures (e.g. arm64) can tell from looking at a pte, if some follow-on ptes also map contiguous physical memory with the same pgprot. (for arm64, these are

Re: [PATCH v5 22/25] mm: Add pte_batch_hint() to reduce scanning in folio_pte_batch()

On 12/02/2024 13:43, David Hildenbrand wrote: > On 02.02.24 09:07, Ryan Roberts wrote: >> Some architectures (e.g. arm64) can tell from looking at a pte, if some >> follow-on ptes also map contiguous physical memory with the same pgprot. >> (for arm64, these are contpte mappings). >> >> Take

Re: [PATCH v5 22/25] mm: Add pte_batch_hint() to reduce scanning in folio_pte_batch()

On 12/02/2024 13:43, David Hildenbrand wrote: > On 02.02.24 09:07, Ryan Roberts wrote: >> Some architectures (e.g. arm64) can tell from looking at a pte, if some >> follow-on ptes also map contiguous physical memory with the same pgprot. >> (for arm64, these are contpte mappings). >> >> Take

Re: [PATCH v5 22/25] mm: Add pte_batch_hint() to reduce scanning in folio_pte_batch()

On 02.02.24 09:07, Ryan Roberts wrote: Some architectures (e.g. arm64) can tell from looking at a pte, if some follow-on ptes also map contiguous physical memory with the same pgprot. (for arm64, these are contpte mappings). Take advantage of this knowledge to optimize folio_pte_batch() so that

[PATCH v5 22/25] mm: Add pte_batch_hint() to reduce scanning in folio_pte_batch()

Some architectures (e.g. arm64) can tell from looking at a pte, if some follow-on ptes also map contiguous physical memory with the same pgprot. (for arm64, these are contpte mappings). Take advantage of this knowledge to optimize folio_pte_batch() so that it can skip these ptes when scanning to