linux-kernel - Re: [PATCH 4/8] x86 boot: allow overlapping ebda and efi memmap memory ranges

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Message-ID: <4856C5D5.7010800@zytor.com>
Date:	Mon, 16 Jun 2008 12:58:13 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
CC:	Paul Jackson <pj@....com>, Yinghai Lu <yhlu.kernel@...il.com>,
	ying.huang@...el.com, mingo@...e.hu, tglx@...utronix.de,
	steiner@....com, travis@....com, linux-kernel@...r.kernel.org,
	andi@...stfloor.org, akpm@...ux-foundation.org
Subject: Re: [PATCH 4/8] x86 boot: allow overlapping ebda and efi memmap memory
 ranges

Alan Cox wrote:
>>
>> 0x40E contains the pointer to the EBDA; this basically tests for the 
>> existence of an EBDA at all.
> 
> I'd disagree with the "very old". Machines without EBDA go right up to
> the AMD Athlon era and maybe beyond that. My old dual Athlon box has no
> EBDA.
> 

Fair enough.

	-hpa
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