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    SubjectRe: [RFC PATCH 4/7] kconfig: support new special property shell=
    On Mon, Feb 12, 2018 at 11:27:25AM +0100, Thomas Gleixner wrote:
    > On Mon, 12 Feb 2018, Peter Zijlstra wrote:
    >
    > > On Sun, Feb 11, 2018 at 10:13:44AM -0800, Linus Torvalds wrote:
    > >
    > > > That actually sounds like we could just
    > > >
    > > > (a) make gcc 4.5 be the minimum required version
    > > >
    > > > (b) actually error out if we find a bad compiler
    > >
    > > So the unofficial plan was to enforce asm-goto and -fentry support by
    > > hard failure to build, which would get us at gcc-4.6 and then remove all
    >
    > Has gcc-4.6 a (planned) retpoline backport? IIRC the cutoff for that was
    > gcc 4.9

    Official GCC will not do retpoline before 4.9 AFAIK. But if someone
    were to want to build a RETPOLINE=n kernel I don't see why we should
    mandate retpoline.

    Also, distro's have backported retpoline much further back already.

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