linux-kernel - Re: [PATCH] MIPS: use generic GCC library routines from lib/

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Message-ID: <20180118202416.GD27409@jhogan-linux.mipstec.com>
Date:   Thu, 18 Jan 2018 20:24:17 +0000
From:   James Hogan <james.hogan@...s.com>
To:     Antony Pavlov <antonynpavlov@...il.com>,
        Palmer Dabbelt <palmer@...ive.com>
CC:     <linux-mips@...ux-mips.org>, <linux-kernel@...r.kernel.org>,
        <ralf@...ux-mips.org>, Matt Redfearn <matt.redfearn@...s.com>
Subject: Re: [PATCH] MIPS: use generic GCC library routines from lib/

On Thu, Jan 18, 2018 at 07:54:49PM +0000, James Hogan wrote:
> On 18 January 2018 20:05:05 GMT+00:00, Antony Pavlov <antonynpavlov@...il.com> wrote:
> >On Wed, 17 Jan 2018 17:34:59 -0800 (PST)
> >Palmer Dabbelt <palmer@...ive.com> wrote:
> >> Given that, I think you can also drop arch/mips/lib/libgcc.h -- if
> >it's used 
> >> from anywhere else, it should be possible to use
> >include/linux/libgcc.h 
> >> instead.
> >
> >I agree with you.
> 
> actually theres a patch in mips-next which implements __multi3 for mips64r6, which uses that file, and in fact extends it for 128bit types.

More specifically, commit ebabcf17bcd7 ("MIPS: Implement __multi3 for
GCC7 MIPS64r6 builds"), which will find its way into v4.15. See also
https://patchwork.linux-mips.org/patch/17890/

Cheers
James

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