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Date:   Sun, 29 Jan 2017 10:53:40 -0800
From:   Linus Torvalds <>
To:     Ingo Molnar <>
Cc:     Linux Kernel Mailing List <>,
        Andrew Morton <>,
        Andy Lutomirski <>,
        Borislav Petkov <>,
        "H . Peter Anvin" <>,
        Peter Zijlstra <>,
        Thomas Gleixner <>,
        Yinghai Lu <>
Subject: Re: [PATCH 37/50] x86/boot/e820: Use 'enum e820_type' in 'struct e820_entry'

On Sun, Jan 29, 2017 at 1:19 AM, Ingo Molnar <> wrote:
> Would it be acceptable to use enum for the kernel internal representation (our
> e820_table structures never actually comes directly, we construct it ourselves),
> and maintain the very explicitly sized ABI type for the boot protocol only (i.e.
> uapi/asm/bootparam.h)?

I guess that would work, assuming that it doesn't cause unnecessary conversions.

Looking at the patch you sent out (assuming that's the complete deal),
it looks reasonable.


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