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Date:   Thu, 9 Nov 2017 08:50:09 -0800
From:   Sami Tolvanen <>
To:     Andi Kleen <>
Cc:     Yury Norov <>,,,
        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

On Wed, Nov 08, 2017 at 04:02:22PM -0800, Andi Kleen wrote:
> There's also older patches to enable single-pass-linking for kallsyms,
> which is extremly useful for LTO build performance.

Excellent, can you point me to the patch in question?

I worked around the build performance problem by reusing vmlinux.o for
kallsyms instead of linking all bitcode again in each step. I'm not sure
if this is feasible with gcc.


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