Linus Torvalds writes: (Summary) On Fri, Dec 15, 2017 at 6:48 PM, Al Viro <viro@zeniv.linux.org.uk> wrote:
Well, it's *semantically* fine and I think it's the right model from that standpoint.
that standpoint.
However, since the main use case of protection keys is probably databases (Dave?) and since those also might be performance-sensitive about direct-IO doing page table lookups, it might not be great in practice.
practice.
Linus
Linus
Linus
[...]
deal with the checks" should be fineWell, it's *semantically* fine and I think it's the right model from that standpoint.
that standpoint.
However, since the main use case of protection keys is probably databases (Dave?) and since those also might be performance-sensitive about direct-IO doing page table lookups, it might not be great in practice.
practice.
Linus
Linus
Linus