linux-kernel - Re: [PATCH 00/36] AArch64 Linux kernel port

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Message-ID: <20120711123055.293267de@pyramind.ukuu.org.uk>
Date:	Wed, 11 Jul 2012 12:30:55 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Catalin Marinas <catalin.marinas@....com>,
	Olof Johansson <olof@...om.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Russell King <linux@....linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 00/36] AArch64 Linux kernel port

> What if they add 64-bit ARM support to arch/x86? AFAIK some of the
> machines are going to be basically PCs, including legacy I/O, ACPI
> and UEFI, so they are much closer to that than they are to anything
> in arch/arm. The instruction set of course is different, but you
> already said that this doesn't matter.

ACPI5 doesn't require legacy I/O although I guess as before people will
be reusing x86 components and might do so for hardware reasons.

Alan
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