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Date:   Fri, 12 Apr 2019 07:44:37 -0700
From:   Dave Hansen <>
To:     Steven Price <>,,
        Linus Torvalds <>
Cc:     Mark Rutland <>,,
        Arnd Bergmann <>,
        Ard Biesheuvel <>,
        Peter Zijlstra <>,
        Catalin Marinas <>,
        Dave Hansen <>,
        Will Deacon <>,,
        Jérôme Glisse <>,
        Ingo Molnar <>, Borislav Petkov <>,
        Andy Lutomirski <>,
        "H. Peter Anvin" <>,
        James Morse <>,
        Thomas Gleixner <>,
        Andrew Morton <>,,
        "Liang, Kan" <>
Subject: Re: [PATCH v8 00/20] Convert x86 & arm64 to use generic page walk

On 4/10/19 7:56 AM, Steven Price wrote:
> Gentle ping: who can take this? Is there anything blocking this series?

First of all, I really appreciate that you tried this.  Every open-coded
page walk has a set of common pitfalls, but is pretty unbounded in what
kinds of bugs it can contain.  I think this at least gets us to the
point where some of those pitfalls won't happen.  That's cool, but I'm a
worried that it hasn't gotten easier in the end.

Linus also had some strong opinions in the past on how page walks should
be written.  He needs to have a look before we go much further.

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