linux-kernel - Re: [PATCH 0/3] x86_64 EFI runtime service support

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Message-ID: <46C9C9C7.8080506@zytor.com>
Date:	Mon, 20 Aug 2007 10:05:11 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Huang, Ying" <ying.huang@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andi Kleen <ak@...e.de>,
	Chandramouli Narayanan <mouli@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] x86_64 EFI runtime service support

Yinghai Lu wrote:
> 
> someone told me that EFI PEI will be 32 bit ( for mem etc
> initialization), and after that will be 64 bit, so the Run time
> service will be 64 bit only, and it will only support 64 bit OS with
> EFI. and they have another mode to emulate the legacy BIOS to boot
> 32bit OS.
> 

That seems unlikely for e.g. the existing Macs already in the field.

*Sigh.*

	-hpa
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