From: Greg KH <gregkh@linuxfoundation.org>
To: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Cc: Ignat Korchagin <ignat@cloudflare.com>,
Ivan Babrou <ivan@cloudflare.com>,
Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>,
Peter Zijlstra <peterz@infradead.org>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Ingo Molnar <mingo@redhat.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
kernel-team <kernel-team@cloudflare.com>
Subject: Re: Linux 4.19 and GCC 9
Date: Mon, 10 Jun 2019 16:48:58 +0200 [thread overview]
Message-ID: <20190610144858.GA1481@kroah.com> (raw)
In-Reply-To: <CANiq72kxyKV1z+dGmMtuq=gUWOYS=Y0EsNFqLKoFXWx6+n=J1g@mail.gmail.com>
On Mon, Jun 10, 2019 at 04:42:27PM +0200, Miguel Ojeda wrote:
> 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")).
That commit is already in all stable releases, so does there need to be
a gcc 9 specific one?
> > 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.
Pointers to how to do that is appreciated. It's been years since I had
to build gcc "from scratch".
thanks,
greg k-h
next prev parent reply other threads:[~2019-06-10 14:49 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-15 18:54 Linux 4.19 and GCC 9 Ivan Babrou
2019-05-16 19:24 ` Miguel Ojeda
2019-05-16 20:11 ` Ivan Babrou
2019-05-16 21:20 ` Miguel Ojeda
2019-05-16 21:24 ` Ivan Babrou
2019-05-17 2:03 ` Josh Poimboeuf
2019-05-17 3:14 ` Ivan Babrou
2019-05-17 5:09 ` Greg KH
2019-05-17 7:38 ` Peter Zijlstra
2019-05-17 8:35 ` Miguel Ojeda
2019-05-17 8:51 ` Greg KH
2019-05-17 9:01 ` Miguel Ojeda
2019-05-17 9:23 ` Greg KH
2019-05-17 9:27 ` Miguel Ojeda
2019-05-17 9:42 ` Greg KH
2019-05-17 11:52 ` Greg KH
2019-05-17 9:48 ` Greg KH
2019-05-17 15:22 ` Arnaldo Carvalho de Melo
2019-05-17 17:23 ` Ivan Babrou
2019-05-17 17:37 ` Arnaldo Carvalho de Melo
2019-06-10 7:21 ` Ivan Babrou
2019-06-10 7:45 ` Greg KH
2019-06-10 9:32 ` Ignat Korchagin
2019-06-10 14:21 ` Greg KH
2019-06-10 14:42 ` Miguel Ojeda
2019-06-10 14:48 ` Greg KH [this message]
2019-06-10 15:01 ` Ignat Korchagin
2019-06-10 15:04 ` Miguel Ojeda
2019-06-10 15:14 ` Arnaldo Carvalho de Melo
2019-06-10 15:25 ` Greg KH
2019-06-10 19:14 ` Arnaldo Carvalho de Melo
2019-06-24 10:42 ` Ignat Korchagin
2019-06-25 7:50 ` Greg KH
2019-06-25 8:08 ` Greg KH
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