Re: [SECURITY] mm: khugepaged collapse_file() drops RWP PTE markers

[Linus Torvalds]

On Wed, 11 Nov 2026 at 13:35, David Hildenbrand (Arm) <david@xxxxxxxxxx> wrote:
>
> So yes, no new uffd features.

The one uffd feature I'd actually like is "no kernel faults".

Because damn it, that has been useful mostly yo people who want to
open up arbitrary kernel timing channels across user accesses.

            Linus