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

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Message-Id: <20080616113806.2ff4c1a4.pj@sgi.com>
Date:	Mon, 16 Jun 2008 11:38:06 -0500
From:	Paul Jackson <pj@....com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	ying.huang@...el.com, mingo@...e.hu, tglx@...utronix.de,
	yhlu.kernel@...il.com, 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

hpa wrote:
> Realistically, we need the infrastructure to be able to make paranoia 
> reservations, and you need to be able to deal with later finding they 
> are actually in use.

While the tone of your reply sounds like something I would naturally
agree with, I can't actually figure out what you mean in this case ;).

In particular, Peter, would you agree/disagree/other with the direction
that Huang and I agreed to last night:

> Would you recommend doing this with code in arch/x86/kernel/head.c,
> that did not invoke reserve_ebda_region() if efi_enabled was set?

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@....com> 1.940.382.4214
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