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Date:      Wed, 23 Aug 2023 07:01:53 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        Jessica Clarke <jrtc27@freebsd.org>
Cc:        Konstantin Belousov <kostikbel@gmail.com>,  "src-committers@freebsd.org" <src-committers@freebsd.org>,  "dev-commits-src-all@freebsd.org" <dev-commits-src-all@freebsd.org>,  "dev-commits-src-main@freebsd.org" <dev-commits-src-main@freebsd.org>
Subject:   Re: git: 4a69fc16a583 - main - Add membarrier(2)
Message-ID:  <CANCZdfpqJM4dsyEFJt6P_Yf9WBJ9V3hYe8tVCipJr0pecsHekg@mail.gmail.com>
In-Reply-To: <0F3EA94D-6696-471C-ABF6-840B5E92967F@freebsd.org>
References:  <202308230007.37N07cOK082906@gitrepo.freebsd.org> <748B7A01-5011-44EE-BB04-282AE96F9B5B@freebsd.org> <ZOVxDqInEgUhBaIN@kib.kiev.ua> <0F3EA94D-6696-471C-ABF6-840B5E92967F@freebsd.org>

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On Tue, Aug 22, 2023 at 11:37=E2=80=AFPM Jessica Clarke <jrtc27@freebsd.org=
> wrote:

>
> > The addition does not change any existing code path in the kernel.
>
> No, but it commits us to a new syscall being stable just days before 14
> branches and has its ABI frozen.
>

I'd planned on committing timerfd later today. I didn't consider it an ABI
breakage, since it was just additive. It's one of the things that can be
MFC'd (we don't prohibit new system calls).

Warner

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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Tue, Aug 22, 2023 at 11:37=E2=80=
=AFPM Jessica Clarke &lt;<a href=3D"mailto:jrtc27@freebsd.org">jrtc27@freeb=
sd.org</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"m=
argin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left=
:1ex"><br>
&gt; The addition does not change any existing code path in the kernel.<br>
<br>
No, but it commits us to a new syscall being stable just days before 14<br>
branches and has its ABI frozen.<br></blockquote><div><br></div><div>I&#39;=
d planned on committing timerfd later today. I didn&#39;t consider it an AB=
I</div><div>breakage, since it was just additive. It&#39;s one of the thing=
s that can be</div><div>MFC&#39;d (we don&#39;t prohibit new system calls).=
</div><div><br></div><div>Warner<br></div></div></div>

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