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    SubjectRe: Linux 4.19 and GCC 9
    On Mon, Jun 10, 2019 at 4:21 PM Greg KH <gregkh@linuxfoundation.org> wrote:
    >
    > > I also checked that 4.19.49 compiles fine with GCC 9, although with a
    > > lot of warnings, mostly from objtool, like "warning: objtool:
    > > sock_register()+0xd: sibling call from callable instruction with
    > > modified stack frame". But it's a start.

    I think Josh Poimboeuf added support for a few related things in GCC 8
    (e.g. 13810435b9a7 ("objtool: Support GCC 8's cold subfunctions")).

    > I'll look into these after the next round of kernels are released. I
    > guess I'll go find a distro that has gcc9 on it to actually test
    > things...

    I typically compile a bare-bones GCC for those things, it is quite quick.

    Cheers,
    Miguel

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