From: Christian Brauner <christian.brauner@ubuntu.com>
To: Arnd Bergmann <arnd@arndb.de>
Cc: y2038@lists.linaro.org, linux-kernel@vger.kernel.org,
Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Christian Brauner <christian@brauner.io>,
linux-api@vger.kernel.org
Subject: Re: [PATCH 23/23] y2038: allow disabling time32 system calls
Date: Mon, 11 Nov 2019 13:31:18 +0100 [thread overview]
Message-ID: <20191111123116.upuqpdetbxdmfp3i@wittgenstein> (raw)
In-Reply-To: <20191108211323.1806194-14-arnd@arndb.de>
On Fri, Nov 08, 2019 at 10:12:22PM +0100, Arnd Bergmann wrote:
> At the moment, the compilation of the old time32 system calls depends
> purely on the architecture. As systems with new libc based on 64-bit
> time_t are getting deployed, even architectures that previously supported
> these (notably x86-32 and arm32 but also many others) no longer depend on
> them, and removing them from a kernel image results in a smaller kernel
> binary, the same way we can leave out many other optional system calls.
>
> More importantly, on an embedded system that needs to keep working
> beyond year 2038, any user space program calling these system calls
> is likely a bug, so removing them from the kernel image does provide
> an extra debugging help for finding broken applications.
>
> I've gone back and forth on hiding this option unless CONFIG_EXPERT
> is set. This version leaves it visible based on the logic that
> eventually it will be turned off indefinitely.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
next prev parent reply other threads:[~2019-11-11 12:31 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-08 21:02 [PATCH 00/23] y2038 cleanups Arnd Bergmann
2019-11-08 21:12 ` [PATCH 10/23] y2038: uapi: change __kernel_time_t to __kernel_old_time_t Arnd Bergmann
2019-11-09 19:03 ` Deepa Dinamani
2019-11-11 12:38 ` Christian Brauner
2019-11-08 21:12 ` [PATCH 12/23] y2038: syscalls: change remaining timeval to __kernel_old_timeval Arnd Bergmann
2019-11-11 12:44 ` Christian Brauner
2019-11-13 22:39 ` Rafael J. Wysocki
2019-11-08 21:12 ` [PATCH 17/23] y2038: time: avoid timespec usage in settimeofday() Arnd Bergmann
2019-11-13 21:53 ` Thomas Gleixner
2019-11-14 11:06 ` Arnd Bergmann
2019-11-14 14:04 ` Thomas Gleixner
2019-11-14 14:35 ` Arnd Bergmann
2019-11-14 23:01 ` Abel Vesa
2019-11-15 7:58 ` Arnd Bergmann
2019-11-15 10:27 ` Rasmus Villemoes
2019-11-15 13:50 ` Arnd Bergmann
2019-11-08 21:12 ` [PATCH 23/23] y2038: allow disabling time32 system calls Arnd Bergmann
2019-11-11 12:31 ` Christian Brauner [this message]
2019-11-13 21:40 ` [PATCH 00/23] y2038 cleanups Arnd Bergmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191111123116.upuqpdetbxdmfp3i@wittgenstein \
--to=christian.brauner@ubuntu.com \
--cc=arnd@arndb.de \
--cc=christian@brauner.io \
--cc=geert@linux-m68k.org \
--cc=linux-api@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=y2038@lists.linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox