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

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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



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