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    SubjectRe: [PATCH v2 23/39] x86: Introduce userspace API for CET enabling
    Date
    * Rick Edgecombe:

    > + /* Only support enabling/disabling one feature at a time. */
    > + if (hweight_long(features) > 1)
    > + return -EINVAL;

    This means we'll soon need three extra system calls for x86-64 process
    start: SHSTK, IBT, and switching off vsyscall emulation. (The latter
    does not need any special CPU support.)

    Maybe we can do something else instead to make the strace output a
    little bit cleaner?

    Thanks,
    Florian

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