Date: Sat, 17 Oct 2020 10:46:10 +0900 From: Masahiro Yamada <masahiroy@...nel.org> To: Kees Cook <keescook@...omium.org> Cc: Sami Tolvanen <samitolvanen@...gle.com>, Steven Rostedt <rostedt@...dmis.org>, Will Deacon <will@...nel.org>, Peter Zijlstra <peterz@...radead.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Paul E. McKenney" <paulmck@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, clang-built-linux <clang-built-linux@...glegroups.com>, Kernel Hardening <kernel-hardening@...ts.openwall.com>, linux-arch <linux-arch@...r.kernel.org>, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-pci@...r.kernel.org, X86 ML <x86@...nel.org> Subject: Re: [PATCH v6 07/25] treewide: remove DISABLE_LTO On Thu, Oct 15, 2020 at 7:43 AM Kees Cook <keescook@...omium.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@...omium.org> > > Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com> > > Reviewed-by: Kees Cook <keescook@...omium.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
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