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    SubjectRe: PKU usage improvements for threads
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    > sys_sigaltstack() is already pretty much useless with SHSTK, and it’s kinda busted with AVX512. How about we just add a whole new non-kludgy API?

    Hi, why is that useless? Signal is not going to change the SSP, all it needs to do is creating a token that can be restored by sigreturn in the future on the current shadow stack.
    Can you provide some examples about that? Thank you.

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