On Sun, Jan 9, 2022 at 11:51 AM Nadav Amit <nadav.amit@xxxxxxxxx> wrote:
>
> If you already accept PTI, [..]
I really don't think anybody should ever "accept PTI".
It's an absolutely enormous cost, and it should be seen as a
last-choice thing. Only really meant for completely broken hardware
(ie meltdown), and for people who have some very serious issues and
think it's "reasonable" to have the TLB isolation.
No real normal sane setup should ever "accept PTI", and it shouldn't
be used as an argument.
Linus
