linux-kernel - Re: build failure of malta_qemu_32r6

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Message-ID: <CADVatmPcL0YF0h6cnUbyo-4xp1re1DTARGKpq9_DYp+hTsueVw@mail.gmail.com>
Date:   Sun, 18 Apr 2021 00:01:36 +0100
From:   Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc:     YunQiang Su <wzssyqa@...il.com>,
        linux-mips <linux-mips@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: build failure of malta_qemu_32r6_defconfig

Hi Thomas,

On Fri, Apr 9, 2021 at 1:17 PM Thomas Bogendoerfer
<tsbogend@...ha.franken.de> wrote:
>
> On Thu, Apr 08, 2021 at 09:42:11AM +0800, YunQiang Su wrote:
> > Sudip Mukherjee <sudipm.mukherjee@...il.com> 于2021年4月8日周四 上午2:26写道：
> > >
> > > Hi Thomas,
> > >
> > > I was building v5.10.28 with malta_qemu_32r6_defconfig and noticed that
> > > it fails to build, so tried next-20210407 to see if it has been fixed.
> > > But linux-next also has the issue with gcc-10.
> > >
> > > The error is:
> > >
> > > ./arch/mips/include/asm/vdso/gettimeofday.h: In function '__vdso_clock_gettime':
> > > ./arch/mips/include/asm/vdso/gettimeofday.h:103:2: error: the register 'lo' cannot be clobbered in 'asm' for the current target
> > >   103 |  asm volatile(
> > >       |  ^~~
> >
> > this operation try to save lo and hi register, while they are not
> > exisiting on r6.
> > We are working on figure out a patch for it.
>
> looks like there is already a patch in patchwork, which just needs
> a workup:
>
> https://patchwork.kernel.org/project/linux-mips/patch/20200801154401.4177009-1-romain.naour@gmail.com/

Looks like there has been no response to it since last 8 months. Do
you want me to respin it and send a proper patch?


--
Regards
Sudip