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Date:   Wed, 8 Nov 2017 16:02:22 -0800
From:   Andi Kleen <>
To:     Yury Norov <>
Cc:     Sami Tolvanen <>,,,
        Greg Hackmann <>,
        Kees Cook <>,
        Matthias Kaehlcke <>,
        Nick Desaulniers <>,
        Maxim Kuvyrkov <>,
        Alex Matveev <>
Subject: Re: [PATCH 13/15] arm64: fix mrs_s/msr_s macros for clang LTO

> There's the series from Andi Kleen that enables LTO for Linux on x86:
> It has solved many problems you also try to solve, and some patches
> are looking very similar. 
> At now we have different patchsets for gcc and clang, and it would be
> better to have them together. One thing I'm worried is that you introduce
> CONFIG_CLANG_LTO and use it for all cases, including that where more
> generic CONFIG_LTO should be used.

Yes would be good to merge the two. I've been looking at updating
my old one.

I don't cover any ARM code, but lots of generic code. My patches
also worked on MIPS at least.

There's also older patches to enable single-pass-linking for kallsyms,
which is extremly useful for LTO build performance.


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