linux-kernel - Re: [PATCH v2 4/5] mips: add system call table generation support

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Date:   Tue, 20 Nov 2018 12:43:53 +0530
From:   Firoz Khan <firoz.khan@...aro.org>
To:     Paul Burton <paul.burton@...s.com>
Cc:     Ralf Baechle <ralf@...ux-mips.org>,
        James Hogan <jhogan@...nel.org>,
        "open list:RALINK MIPS ARCHITECTURE" <linux-mips@...ux-mips.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        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 v2 4/5] mips: add system call table generation support

Hi Paul,

On Tue, 20 Nov 2018 at 04:05, Paul Burton <paul.burton@...s.com> wrote:
>
> Hi Firoz,
>
> On Thu, Nov 15, 2018 at 11:44:20AM +0530, Firoz Khan wrote:
> > diff --git a/arch/mips/kernel/syscalls/Makefile b/arch/mips/kernel/syscalls/Makefile
> > new file mode 100644
> > index 0000000..dc6bbb1
> > --- /dev/null
> > +++ b/arch/mips/kernel/syscalls/Makefile
> > @@ -0,0 +1,71 @@
> > +# SPDX-License-Identifier: GPL-2.0
> > +kapi := arch/$(SRCARCH)/include/generated/asm
> > +uapi := arch/$(SRCARCH)/include/generated/uapi/asm
> > +
> > +_dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)')    \
> > +       $(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
> > +
> > +syscallo32 := $(srctree)/$(src)/syscall_o32.tbl
> > +syscall64 := $(srctree)/$(src)/syscall_64.tbl
> > +syscalln32 := $(srctree)/$(src)/syscall_n32.tbl
> > +syshdr := $(srctree)/$(src)/syscallhdr.sh
> > +systbl := $(srctree)/$(src)/syscalltbl.sh
>
> Could we go with 'n64' instead of just '64'?
>
> When we get nanoMIPS support we'll be introducing the p32 ABI, and
> there's a reasonable chance that the equivalent p64 ABI may come along
> in the future. Using 'n64' now would avoid confusion in that case where
> we may have 2 different 64-bit ABIs.

Sure, will do.

Thanks
Firoz

>
> Thanks,
>     Paul