linux-kernel - Re: [PATCH v4 5/6] parisc: wire up rseq system call

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Date:   Fri, 12 Oct 2018 13:52:15 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Firoz Khan <firoz.khan@...aro.org>
Cc:     Parisc List <linux-parisc@...r.kernel.org>,
        "James E.J. Bottomley" <jejb@...isc-linux.org>,
        Helge Deller <deller@....de>,
        Thomas Gleixner <tglx@...utronix.de>,
        gregkh <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        y2038 Mailman List <y2038@...ts.linaro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Marcin Juszkiewicz <marcin.juszkiewicz@...aro.org>
Subject: Re: [PATCH v4 5/6] parisc: wire up rseq system call

On Fri, Oct 12, 2018 at 12:16 PM Firoz Khan <firoz.khan@...aro.org> wrote:
>
> Hi Arnd,
>
> On Fri, 12 Oct 2018 at 15:26, Arnd Bergmann <arnd@...db.de> wrote:
> >
> > On Fri, Oct 12, 2018 at 11:45 AM Firoz Khan <firoz.khan@...aro.org> wrote:
> > >
> > > Wire up rseq system call requires an architecture specific
> > > implementation as it not present now.
> > >
> > > Signed-off-by: Firoz Khan <firoz.khan@...aro.org>
> >
> > Didn't we conclude that this should be skipped?
>
> Helge told "I prefer to keep the warning for rseq for now.
> It reminds me that we still may want the rseq syscall.
> If the warning is a problem, you may simply add the __IGNORE_rseq define."
>
> I chose this option; I feel it looks clean
> "# rseq requires an architecture specific implementation" in syscall.tbl
> hopefully remind him to add rseq syscall implementation in this architecture.
>

But he said he wants the warning instead.

     Arnd