On Thu, 15 Feb 2024 11:11:34 -0500
Steven Rostedt [off-list ref] wrote:

On Wed,  7 Feb 2024 00:12:40 +0900
"Masami Hiramatsu (Google)" [off-list ref] wrote:

quoted

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

Add ftrace_partial_regs() which converts the ftrace_regs to pt_regs.
If the architecture defines its own ftrace_regs, this copies partial
registers to pt_regs and returns it. If not, ftrace_regs is the same as
pt_regs and ftrace_partial_regs() will return ftrace_regs::regs.

This says what this patch is doing and not why it is doing it.

Hmm, OK. The reason is the eBPF needs this to keep the same pt_regs
interface to access registers.
Thus when replacing the pt_regs with ftrace_regs in fprobes (which is
used by kprobe_multi eBPF event), this will be required.
I'll add this to next version.

Thanks,

-- Steve

quoted

Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Acked-by: Florent Revest <redacted>
---
 Changes from previous series: NOTHING, just forward ported.
---

-- 
Masami Hiramatsu (Google) [off-list ref]