linux-kernel - Re: [PATCH][next] ftrace: Fix -Wcast-function-type warnings on powerpc64

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Date:   Tue, 5 Oct 2021 11:18:12 -0500
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Ingo Molnar <mingo@...hat.com>,
        Daniel Bristot de Oliveira <bristot@...nel.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] ftrace: Fix -Wcast-function-type warnings on
 powerpc64

On Tue, Oct 05, 2021 at 11:17:14AM -0400, Steven Rostedt wrote:
> On Tue, 5 Oct 2021 00:39:22 -0500
> "Gustavo A. R. Silva" <gustavoars@...nel.org> wrote:
> 
> > In order to make sure new function cast mismatches are not introduced
> > in the kernel (to avoid tripping CFI checking), the kernel should be
> > globally built with -Wcast-function-type.
> > 
> > So, fix the following -Wcast-function-type warnings on powerpc64
> > (ppc64_defconfig):
> 
> I think I'll go back and add my linker magic.
> 
>   https://lore.kernel.org/all/20200617165616.52241bde@oasis.local.home/
> 
> I'll clean it up a bit too. I'll have a patch in a bit.

Awesome. :)

Thanks
--
Gustavo