Messages in this thread | | | Date | Wed, 11 Jul 2018 10:27:39 +0200 | From | Pavel Machek <> | Subject | Re: [RFC PATCH v2 05/27] Documentation/x86: Add CET description |
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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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