Re: [PATCH RFC 1/8] ftrace: Let ftrace_call_adjust() reject a patch site

[Jose Fernandez (Anthropic)]

On Fri, 4 Sep 2026 08:47:28 -0400, Steven Rostedt wrote:
> The above could use a comment to why addr could be zero (I didn't even
> realize some architectures do that).
>
> 	/* Some architectures may return zero for mis-aligned addresses */

Will add one in v2, thanks.

Today arm64 returns 0 only for a mis-aligned patch site. But patch 4 of
this series replaces that check with two: the two NOPs to patch must be
there, and the ops pointer must fit in the prefix NOPs (which also
catches a mis-aligned site). How about this to cover the series?

	/* The architecture may return 0 to reject a patch site */

Happy to name the mis-aligned case in patch 1 and extend the comment
in patch 4 if you prefer that.

Thanks,
Jose