linux-kernel - Re: Linux 4.19 and GCC 9

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Date:   Fri, 17 May 2019 10:51:26 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Ivan Babrou <ivan@...udflare.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Namhyung Kim <namhyung@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        kernel-team <kernel-team@...udflare.com>
Subject: Re: Linux 4.19 and GCC 9

On Fri, May 17, 2019 at 10:35:29AM +0200, Miguel Ojeda wrote:
> On Fri, May 17, 2019 at 9:38 AM Peter Zijlstra <peterz@...radead.org> wrote:
> >
> > On Fri, May 17, 2019 at 07:09:31AM +0200, Greg KH wrote:
> > > On Thu, May 16, 2019 at 08:14:25PM -0700, Ivan Babrou wrote:
> > > > We are building the upstream kernel. There are a few patches, but
> > > > nothing related to objtool.
> > > >
> > > > Unless you mean mainline/stable by upstream, I haven't tried that. We
> > > > stick to LTS.
> > >
> > > Please work and all of these issues fixed up in Linus's tree and then I
> > > will be glad to take the fixed into the stable releases.
> >
> > Right; if there is anything you can reproduce on linus.git I'll happily
> > have a look. If it doesn't reproduce all you have to do is find the
> > patches that make it work and ask Greg.
> 
> Just to clarify: Linus' master is clean of these issues with GCC 9.1.1.

Great!  Care to find the patches that did that work and send me the git
commit ids so that I can queue them up?  I don't have gcc9 here yet on
my systems, so I can not test for this.

thanks,

greg k-h