linux-kernel - Re: [PATCH -mm -v3 1/2] i386/x86

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Message-ID: <46F5735C.5040803@zytor.com>
Date:	Sat, 22 Sep 2007 12:56:12 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	"Huang, Ying" <ying.huang@...el.com>, Andi Kleen <ak@...e.de>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	akpm@...ux-foundation.org, Yinghai Lu <yhlu.kernel@...il.com>,
	Chandramouli Narayanan <mouli@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm -v3 1/2] i386/x86_64 boot: setup data

Jeremy Fitzhardinge wrote:
> 
> Do you actually need a linked list of data?  This is similar to the
> changes to bzImage to support booting bzImage a paravirt environment,
> but I just proposed a pointer to a single info structure, along with a
> field to identify the boot environment (ie, native/lguest/xen etc).  It
> would be easy to extend this to handle EFI as just another boot
> environment, and you could hang a list of structures off the pointer.
> 

*He* doesn't, but *we* do.  We have already run into at least one case
where the existing structure is insufficient (EDD overhaul), and so we
need to do something extensible.

	-hpa
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