Re: [PATCH v6 07/25] treewide: remove DISABLE_LTO

Masahiro Yamada
2020-10-17T05:26:57Z

On Thu, Oct 15, 2020 at 7:43 AM Kees Cook <keescook@chromium.org> wrote:
>
> On Mon, Oct 12, 2020 at 05:31:45PM -0700, Sami Tolvanen wrote:
> > This change removes all instances of DISABLE_LTO from
> > Makefiles, as they are currently unused, and the preferred
> > method of disabling LTO is to filter out the flags instead.
> >
> > Suggested-by: Kees Cook <keescook@chromium.org>
> > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
> > Reviewed-by: Kees Cook <keescook@chromium.org>
>
> Hi Masahiro,
>
> Since this is independent of anything else and could be seen as a
> general cleanup, can this patch be taken into your tree, just to
> separate it from the list of dependencies for this series?
>
> -Kees
>
> --
> Kees Cook

Yes, this is stale code because GCC LTO was not pulled.

Applied to linux-kbuild.

I added the following historical background.

Note added by Masahiro Yamada:
DISABLE_LTO was added as preparation for GCC LTO, but GCC LTO was
not pulled into the mainline. (https://lkml.org/lkml/2014/4/8/272)

--
Best Regards
Masahiro Yamada