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SubjectRe: build failure of malta_qemu_32r6_defconfig
On Thu, Apr 08, 2021 at 09:42:11AM +0800, YunQiang Su wrote:
> Sudip Mukherjee <sudipm.mukherjee@gmail.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/

Thomas.

--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]

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