Re: [RFC PATCH v9 01/27] Documentation/x86: Add CET description
From: Dave Hansen <hidden>
Date: 2020-03-09 20:59:56
Also in:
linux-arch, linux-doc, linux-mm, lkml
On 3/9/20 1:54 PM, H.J. Lu wrote:
quoted
If a program with the magic ELF CET flags missing can’t make a thread with IBT and/or SHSTK enabled, then I think we’ve made an error and should fix it.A non-CET program can start a CET program and vice versa.
Could we be specific here, please? HJ are you saying that: * CET program can execve() a non-CET program, and * a non-CET program can execve() a CET program ? That's obvious. But what are the rules for clone()? Should there be rules for mismatches for CET enabling between threads if a process (not child processes)?