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    SubjectRe: [RFC PATCH v2 05/27] Documentation/x86: Add CET description
    On Tue 2018-07-10 15:26:17, Yu-cheng Yu wrote:
    > Explain how CET works and the no_cet_shstk/no_cet_ibt kernel
    > parameters.
    >

    > --- /dev/null
    > +++ b/Documentation/x86/intel_cet.txt
    > @@ -0,0 +1,250 @@
    > +=========================================
    > +Control Flow Enforcement Technology (CET)
    > +=========================================

    We normally use .rst for this kind of formatted text.


    > +[6] The implementation of the SHSTK
    > +===================================
    > +
    > +SHSTK size
    > +----------
    > +
    > +A task's SHSTK is allocated from memory to a fixed size that can
    > +support 32 KB nested function calls; that is 256 KB for a 64-bit
    > +application and 128 KB for a 32-bit application. The system admin
    > +can change the default size.

    How does admin change that? We already have ulimit for stack size,
    should those be somehow tied together?

    $ ulimit -a
    ...
    stack size (kbytes, -s) 8192


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