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

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Date:   Sat, 13 Oct 2018 11:12:12 +0530
From:   Firoz Khan <firoz.khan@...aro.org>
To:     Helge Deller <deller@....de>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-parisc@...r.kernel.org,
        "James E . J . Bottomley" <jejb@...isc-linux.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <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

Hi Arnd, Helge,

On Sat, 13 Oct 2018 at 01:53, Helge Deller <deller@....de> wrote:
>
> On 12.10.2018 13:52, Arnd Bergmann wrote:
> > 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.
>
> Correct.
> Firoz, please simply drop this patch completely.
> That way one will see generated warnings about the missing rseq (which is what
> we want).

Sure. will do!

Firoz

>
> Thanks,
> Helge