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

[Yu, Yu-cheng]

On 8/26/2021 10:28 AM, Borislav Petkov wrote:
> 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.

Sure!

Yu-cheng