Adding 16 KB Page Size to Android

Re:Adding 16 KB Page Size to Android by arghwhat on Saturday August 24, 2024 @02:55AM (#41336196)

Hmm? Pretending the page size is larger than it is would not yield the primary performance benefits of reduced TLB misses. Unless I am missing something, that seems more like a hack to save a tiny bit of kernel memory on a constrained system by having two PTE’s backed by the same internal page structure.

Unless we can change the size of the smallest page entry on Intel, I doubt there is room to do anything interesting there. If we could do like ARM and just multiply all the page sizes by 4 you would avoid any “shoehorning”.

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Re:Adding 16 KB Page Size to Android by bewaretheirs on Saturday August 24, 2024 @04:15PM (#41341159)

The smallest page size tends to get entrenched in the rest of the system (for things like linker page sizes, IOMMU interfaces, etc.,); growing the smallest page size might not be a viable option in existing systems and it might be easier to introduce intermediate-size TLB entries, perhaps formed by consolidating adjacent contiguous PTE's..

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