Re: [PATCH v29 25/32] x86/cet/shstk: Handle thread shadow stack

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On Thu, Aug 26, 2021 at 10:22:29AM -0700, H.J. Lu wrote:
> > > +     /*
> > > +      * Earlier clone() does not pass stack_size.  Use RLIMIT_STACK and
> >
> > What is "earlier clone()"?
> 
> clone() doesn't have stack size info which was added to clone3().

/me goes and reads the manpage...

   clone3()
       The  clone3()  system call provides a superset of the functionality of the older
       clone() interface.  It also provides a number of  API  improvements,  including:
       space  for additional flags bits; cleaner separation in the use of various argu‐
       ments; and the ability to specify the size of the child's stack area.

Aha, Yu-cheng, pls use those words to make your comment understandable.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette



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