Re: [PATCH v16 04/18] function_graph: Replace fgraph_ret_regs with ftrace_regs

Masami Hiramatsu
2024-10-15T23:47:30Z

On Tue, 15 Oct 2024 20:39:06 +0200
Heiko Carstens <hca@linux.ibm.com> wrote:

> That would make things much simpler... e.g. your new patch is also
> writing r3 to fregs, why?

BTW, according to the document [1], r3 is for "return value 1", isn't it
used usually?

[1] https://www.kernel.org/doc/Documentation/s390/Debugging390.txt

Thanks,

--
Masami Hiramatsu (Google) <mhiramat@kernel.org>