Linus Torvalds writes: (Summary) And modern gcc's
no longer have the pipe between cpp and cc1, so they don't have that
issue either (which would have sjhown the PTI slowdown a lot more)
issue either (which would have sjhown the PTI slowdown a lot more)
Some other loads will do a lot more time traversing the user/kernel
boundary, and in 32-bit mode you won't be able to take advantage of
the address space ID's, so you really get the full effect.
You absolutely need to inherit it (so that you can say "I trust this
session" or whatever), but at the same time you *don't* want to
inherit if you have a server you trust that then spawns user processes
(think "I want systemd to not have the overhead, but the user
processes it spawns obviously do need protection").
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