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Date:	Wed, 19 Dec 2012 13:33:40 -0800
From:	"H. Peter Anvin" <>
To:	Linus Torvalds <>,
	"H. Peter Anvin" <>
CC:	stable <>,
	Alan Cox <>,
	Dmitry Torokhov <>,
	"Eric W. Biederman" <>,
	Ingo Molnar <>,
	Linux Kernel Mailing List <>,
	Michael Brown <>,
	Ondrej Zary <>,
	"Rafael J. Wysocki" <>,
	Thomas Gleixner <>,
	Yinghai Lu <>
Subject: Re: [GIT PULL] Additional x86 fixes for v3.8-rc1

Well, A20 has been done inside the caches since 486, usually in the TLB.  Nehalem finally killed off A20M.

You're not the only one surprised by this...

Linus Torvalds <> wrote:

>On Wed, Dec 19, 2012 at 12:22 PM, H. Peter Anvin <>
>>       x86, 8042: Enable A20 using KBC to fix S3 resume on some MSI
>Christ really? What century are we in? There are still machines that
>have A20 disabled at all, much less externally? How do they even do
>that these days, afaik the CPU caches can't handle the fake aliasing
>Anyway, pulled, I just wanted to express my surprise..
>          Linus

Sent from my mobile phone. Please excuse brevity and lack of formatting.
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