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    SubjectRe: asm-generic: Disallow no-op mb() for SMP systems
    On Fri, 2 Feb 2018 21:25:49 +0100
    Peter Zijlstra <peterz@infradead.org> wrote:

    > On Sat, Feb 03, 2018 at 04:00:35AM +0800, kbuild test robot wrote:
    > > Hi Peter,
    > >
    > > I love your patch! Yet something to improve:
    >
    > Seriously? Bots have feelings?
    >
    > > [auto build test ERROR on asm-generic/master]
    > > [also build test ERROR on v4.15 next-20180202]
    > > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
    > >
    > > url: https://github.com/0day-ci/linux/commits/Peter-Zijlstra/asm-generic-Disallow-no-op-mb-for-SMP-systems/20180203-000108
    > > base: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git master
    > > config: m32r-usrv_defconfig (attached as .config)
    > > compiler: m32r-linux-gcc (GCC) 7.2.0
    >
    > Awesome, another broken architecture.. and this one is Orphaned :-(
    > No maintainer to bug..

    Renesas claim to still support the processor family so perhaps they can
    provide a maintainer if you instead submit a patch to remove it from the
    tree ;-)

    From the documentation however the processor only does explicit dual
    issue instructions, and the SMP is cache coherent so I'm not convinced
    there is a problem with it.


    Alan

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