linux-kernel - Re: [PATCH] livepatch: introduce klp

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Date: Fri, 7 Jun 2024 10:26:49 +0800
From: zhang warden <zhangwarden@...il.com>
To: Joe Lawrence <joe.lawrence@...hat.com>
Cc: Miroslav Benes <mbenes@...e.cz>,
 Josh Poimboeuf <jpoimboe@...nel.org>,
 Jiri Kosina <jikos@...nel.org>,
 Petr Mladek <pmladek@...e.com>,
 live-patching@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH] livepatch: introduce klp_func called interface



> On Jun 6, 2024, at 23:01, Joe Lawrence <joe.lawrence@...hat.com> wrote:
> 
> Hi Wardenjohn,
> 
> To follow up, Red Hat kpatch QE pointed me toward this test:
> 
> https://gitlab.com/redhat/centos-stream/tests/kernel/kernel-tests/-/tree/main/general/kpatch/kpatch-trace?ref_type=heads
> 
> which reports a few interesting things via systemd service and ftrace:
> 
> - Patched functions
> - Traced functions
> - Code that was modified, but didn't run
> - Other code that ftrace saw, but is not listed in the sysfs directory
> 
> The code looks to be built on top of the same basic ftrace commands that
> I sent the other day.  You may be able to reuse/copy/etc bits from the
> scripts if they are handy.
> 
> --
> Joe
> 

Thank you so much, you really helped me, Joe!

I will try to learn the script and make it suitable for our system.

Again, thank you, Joe!

Regards,
Wardenjohn