Date:   Sun, 12 Dec 2021 18:48:56 +0100
From:   Heiko Carstens <hca@linux.ibm.com>
To:     "Eric W. Biederman" <ebiederm@xmission.com>
Cc:     linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Alexey Gladkov <legion@kernel.org>,
        Kyle Huey <me@kylehuey.com>, Oleg Nesterov <oleg@redhat.com>,
        Kees Cook <keescook@chromium.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Vasily Gorbik <gor@linux.ibm.com>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        Alexander Gordeev <agordeev@linux.ibm.com>
Subject: Re: [PATCH 01/10] exit/s390: Remove dead reference to do_exit from
 copy_thread
Message-ID: <YbY2CDkZbOFRBN0i@osiris>
References: <87a6ha4zsd.fsf@email.froward.int.ebiederm.org>
 <20211208202532.16409-1-ebiederm@xmission.com>
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On Wed, Dec 08, 2021 at 02:25:23PM -0600, Eric W. Biederman wrote:
> My s390 assembly is not particularly good so I have read the history
> of the reference to do_exit copy_thread and have been able to
> verify that do_exit is not used.
> 
> The general argument is that s390 has been changed to use the generic
> kernel_thread and kernel_execve and the generic versions do not call
> do_exit.  So it is strange to see a do_exit reference sitting there.
> 
> The history of the do_exit reference in s390's version of copy_thread
> seems conclusive that the do_exit reference is something that lingers
> and should have been removed several years ago.
...
> Remove this dead reference to do_exit to make it clear that s390 is
> not doing anything with do_exit in copy_thread.
>
> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
> ---
>  arch/s390/kernel/process.c | 1 -
>  1 file changed, 1 deletion(-)

Applied to s390 tree. Just in case you want to apply this to your tree too:
Acked-by: Heiko Carstens <hca@linux.ibm.com>