From: Andi Kleen <ak@suse.de>
Organization: SUSE Linux Products GmbH, Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg)
To: "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [PATCH 5/5] x86_64 EFI support -v3: EFI document
Date: Wed, 8 Aug 2007 18:22:07 +0200
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Cc: "Huang, Ying" <ying.huang@intel.com>, akpm@linux-foundation.org,
       Yinghai Lu <yhlu.kernel@gmail.com>,
       Randy Dunlap <randy.dunlap@oracle.com>,
       Chandramouli Narayanan <mouli@linux.intel.com>,
       linux-kernel@vger.kernel.org
References: <1185851583.23149.30.camel@caritas-dev.intel.com> <200708081208.01080.ak@suse.de> <m1tzrac8hz.fsf@ebiederm.dsl.xmission.com>
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> 
> This is the classic skip the 16bit code and enter the kernel
> in 32bit mode filling in the fields that the 16bit mode code would
> have filled in the same way approach.

kexec can use it because it's in tree.

But I don't think using it by out of tree stuff is a good idea.

e.g. assuming we need a new field. How would we extend this?
There is no version number or anything to detect this.

For in tree code it can be just updated. But weirdo-EFI-boot loader
cannot.

-Andi
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