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SubjectRe: [PATCH v2 05/11] MIPS: Switch to arch_topology
On Sun, 12 Apr 2020 10:39:08 +0100
Marc Zyngier <maz@kernel.org> wrote:

> On Sun, 12 Apr 2020 15:49:27 +0800
> Jiaxun Yang <jiaxun.yang@flygoat.com> wrote:
>
> > On Sun, 12 Apr 2020 13:24:21 +0800
> > kbuild test robot <lkp@intel.com> wrote:
> >
> > > Hi Jiaxun,
> > >
> > > I love your patch! Yet something to improve:
> > >
> > > [auto build test ERROR on driver-core/driver-core-testing]
> > > [also build test ERROR on pm/linux-next linus/master
> > > next-20200411] [cannot apply to tip/perf/core tip/irq/core v5.6]
> > > [if your patch is applied to the wrong git tree, please drop us a
> > > note to help improve the system. BTW, we also suggest to use
> > > '--base' option to specify the base tree in git format-patch,
> > > please see https://stackoverflow.com/a/37406982]
> > >
> > > url:
> > > https://github.com/0day-ci/linux/commits/Jiaxun-Yang/MIPS-Topology-DeviceTree-CPU-rework-v2/20200412-113308
> > > base:
> > > https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
> > > a10c9c710f9ecea87b9f4bbb837467893b4bef01 config: mips-allnoconfig
> > > (attached as .config) compiler: mips-linux-gcc (GCC) 9.3.0
> > > reproduce: wget
> > > https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross
> > > -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached
> > > .config to linux build tree GCC_VERSION=9.3.0 make.cross
> > > ARCH=mips
> > >
> > > If you fix the issue, kindly add following tag as appropriate
> > > Reported-by: kbuild test robot <lkp@intel.com>
> > >
> > > Note: the
> > > linux-review/Jiaxun-Yang/MIPS-Topology-DeviceTree-CPU-rework-v2/20200412-113308
> > > HEAD 8e8e9d4f7aa74359f2199773786ffe2fbb7877d0 builds fine. It only
> > > hurts bisectibility.
> > >
> > Hi all,
> >
> > In this case I think it should be fine to break bisect, otherwise
> > #05 will combine too many modifications in different subsystems.
>
> No. It is never OK to break bisection, specially when it affects a
> whole architecture.

I'm going to squash all these into patch #5.
It's really hard to do it gradually.

Thanks.

>
> We introduce gradual changes over multiple subsystems all the time by
> using configuration symbols, no matter the number of patches. Yes, it
> is sometimes hard. But breaking the kernel and forcing everyone else
> to just deal with it is not acceptable.
>
> Thanks,
>
> M.
--
Jiaxun Yang

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