Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 12 Jan 2018 09:55:45 -0800 | Subject | Re: [RFC PATCH v2 6/6] x86/entry/pti: don't switch PGD on when pti_disable is set |
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On Fri, Jan 12, 2018 at 8:27 AM, David Laight <David.Laight@aculab.com> wrote: > > You need to allow for libraries that create threads before main() > is called.
I really don't think we do. I think the normal case is the wrapper.
Processes should never say "I'm so important that I'm disabling PTI". That's crazy talk, and wrong.
It's wrong for all the usual reasons - everybody always thinks that _their_ own work is so important and bug-free, and that things like PTI are about protecting all those other imcompetent people.
No. Bullshit. Nobody should ever disable PTI for themselves, because nobody is inherently trustworthy.
Instead, we have the case of something _external_ saying "this process is so important that it should be started without PTI".
Linus
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