linux-kernel - Re: linux-next: manual merge of the rseq tree with Linus' tree

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Message-ID: <1986203057.15906.1510763941256.JavaMail.zimbra@efficios.com>
Date:   Wed, 15 Nov 2017 16:39:01 +0000 (UTC)
From:   Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Ingo Molnar <mingo@...nel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Andy Lutomirski <luto@...nel.org>,
        Borislav Petkov <bp@...e.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: linux-next: manual merge of the rseq tree with Linus' tree

----- On Nov 15, 2017, at 11:30 AM, Thomas Gleixner tglx@...utronix.de wrote:

> On Wed, 15 Nov 2017, Mathieu Desnoyers wrote:
> 
>> ----- On Nov 15, 2017, at 11:04 AM, Thomas Gleixner tglx@...utronix.de wrote:
>> 
>> > On Wed, 15 Nov 2017, Mathieu Desnoyers wrote:
>> >> ----- On Nov 15, 2017, at 10:22 AM, Thomas Gleixner tglx@...utronix.de wrote:
>> >> > Can we please handle this as any other feature which is not ready before
>> >> > the merge window and postpone the rseq stuff for 4.16?
>> >> 
>> >> Linus showed interest in merging the rseq tree when we discussed at the
>> >> Kernel Summit. The tree has not changed much since then. I only integrated
>> >> membarrier patches that were implemented around the time of the 4.14 merge
>> >> window, which I queued for the 4.15 (current) window.
>> > 
>> > Linus showed interest for a lot of things in the past. That does not mean
>> > it makes things magically complete and ready.
>> > 
>> > As Michael pointed out there is no man page, not even a draft for it
>> > available. See: Documentation/process/adding-syscalls.rst
>> 
>> The rseq commit has a manpage associated for seq. The cpu_opv does not have it
>> yet, nor the new membarrier commands. I plan to write those quickly after the
>> tree reaches master.
> 
> And that's a special rule for you, right?
> 
> Documentation/process/adding-syscalls.rst is for everybody else who
> implements a new syscall.

I'll prepare the manpage before the PR.

Thanks,

Mathieu

> 
> Thanks,
> 
> 	tglx

-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com