Re: [RFC PATCH 13/37] mm: implement speculative handling in __handle_mm_fault().

On 4/6/21 6:44 PM, Michel Lespinasse wrote: > The page table tree is walked with local irqs disabled, which prevents > page table reclamation (similarly to what fast GUP does). The logic is > otherwise similar to the non-speculative path, but with additional > restrictions: in the speculative path,

[RFC PATCH 13/37] mm: implement speculative handling in __handle_mm_fault().

The page table tree is walked with local irqs disabled, which prevents page table reclamation (similarly to what fast GUP does). The logic is otherwise similar to the non-speculative path, but with additional restrictions: in the speculative path, we do not handle huge pages or wiring new pages tab