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    SubjectRe: [PATCH] Add rdc321x defconfig file

    * Adrian Bunk <bunk@kernel.org> wrote:

    > > What i do against build breakage is randconfig testing. That catches
    > > far more build breakage than a few limited number of defconfigs
    > > would ever.
    >
    > How do you test whether a x86 merge might break the compilation of
    > e.g. some ARM platform without using any defconfig?

    yes, we do test that too. (we added this recently)

    > And building all defconfigs is the trivial way of having most
    > reasonable configurations covered with only one day of compile time.

    the existing 32-bit and 64-bit defconfigs should be enough for that. For
    better/full coverage, randconfig should be used.

    > > More defconfigs would just be a constant maintenance drag, they are
    > > rather pointless on PC hardware anyway (we'd have to have at least a
    > > few hundred of them for it to be meaningful as a "default config")
    > > and it does not really solve the problem either.
    >
    > My goal was "one per subarchitecture" which is not such a big number.

    at least on x86 subarchitectures are not at all that important (they are
    a rather inflexible build-time concept), and as you have seen it in this
    thread, we are working on reducing their count. 99% of the real hardware
    is covered under the generic subarchitecture.

    they are more important on other (mostly embedded) platforms, with ARM
    having 75 defconfigs.

    Ingo


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