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    SubjectRe: [PATCH RFC 2/4] x86/arch_prctl: add ARCH_GET_NOPTI and ARCH_SET_NOPTI to enable/disable PTI
    On Mon, Jan 08, 2018 at 05:12:17PM +0100, Willy Tarreau wrote:
    > + if (doit) {
    > + if (arg2)
    > + task_thread_info(task)->flags |= _TIF_NOPTI;
    > + else
    > + task_thread_info(task)->flags &= ~_TIF_NOPTI;

    {set,clear}_thread_flag() please, the above is not SMP safe.

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