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Date:   Fri, 18 Dec 2020 10:34:28 +0000
From:   "Bae, Chang Seok" <>
To:     Peter Zijlstra <>
CC:     Thomas Gleixner <>,
        Ingo Molnar <>, Borislav Petkov <>,
        Andy Lutomirski <>,
        "the arch/x86 maintainers" <>,
        "" <>,
        "Williams, Dan J" <>,
        "Hansen, Dave" <>,
        "Shankar, Ravi V" <>,
        "Sun, Ning" <>,
        "Dwarakanath, Kumar N" <>,
        "" <>,
        "" <>
Subject: Re: [RFC PATCH 7/8] crypto: x86/aes-kl - Support AES algorithm using
 Key Locker instructions

> On Dec 18, 2020, at 19:11, Peter Zijlstra <> wrote:
> *groan*, so what actual version of binutils is needed and why is this
> driver important enough to build on ancient crud to warrant all this
> gunk?

The new Key Locker instructions look to be added a few month ago [1].
But the latest binutils release (2.35.1) does not include them yet.

I’m open to drop the macros if there is any better way to define them
without binutils support.



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