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Re: GCC 7 backport [PATCH 0/5] x86: CVE-2017-5715, aka Spectre
- From: Jan Hubicka <hubicka at ucw dot cz>
- To: "H.J. Lu" <hjl dot tools at gmail dot com>
- Cc: Richard Biener <richard dot guenther at gmail dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>, "Uros Bizjak (ubizjak at gmail dot com)" <ubizjak at gmail dot com>
- Date: Tue, 16 Jan 2018 07:34:33 +0100
- Subject: Re: GCC 7 backport [PATCH 0/5] x86: CVE-2017-5715, aka Spectre
- Authentication-results: sourceware.org; auth=none
- References: <CAMe9rOp326Mb58rJCqLQwyvgrfy9WdszFdsc8H4BWjxo+eQ7bA@mail.gmail.com>
> On Mon, Jan 15, 2018 at 8:53 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> > On Mon, Jan 15, 2018 at 3:38 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> >> On Mon, Jan 15, 2018 at 12:31 AM, Richard Biener
> >> <richard.guenther@gmail.com> wrote:
> >>> On Sun, Jan 14, 2018 at 4:08 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> >>>> Now my patch set has been checked into trunk. Here is a patch set
> >>>> to move struct ix86_frame to machine_function on GCC 7, which is
> >>>> needed to backport the patch set to GCC 7:
> >>>>
> >>>> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01239.html
> >>>> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01240.html
> >>>> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01241.html
> >>>>
> >>>> OK for gcc-7-branch?
> >>>
> >>> Yes, backporting is ok - please watch for possible fallout on trunk and make
> >>> sure to adjust the backport accordingly. I plan to do GCC 7.3 RC1 on
> >>> Wednesday now with the final release about a week later if no issue shows
> >>> up.
> >>>
> >>
> >> Backport is blocked by
> >>
> >> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83838
> >>
> >> There are many test failures due to lack of comdat support in linker on Solaris.
> >> I can limit these tests to Linux.
> >
> > These are testcase issues and shouldn't block backport to GCC 7.
> >
> >> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83839
> >>
> >> Bootstrap failed on Dawning due to lack of ".set" directive in assembler. I
> >> uploaded a patch:
> >>
> >> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43124
> >>
> >> There is no confirmation on it. Also there may be test failures on Dardwin
> >> due to difference in assembly output.
> >
> > I posted a patch for Darwin build:
> >
> > https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01347.html
> >
> > This needs to be checked into trunk before I can start backport to GCC 7.
>
> Darwin build has been fixed. I believe that Solaris issue should be
> addressed by Solaris linker.
>
> I backported all Spectre related patches to GCC 7:
>
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01389.html
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01388.html
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01386.html
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01387.html
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01384.html
> https://gcc.gnu.org/ml/gcc-patches/2018-01/msg01385.html
>
> OK for gcc-7-branch?
OK,
thanks!
Honza
>
> Thanks.
>
> --
> H.J.