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Date: Wed, 21 Nov 2012 15:34:22 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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Subject: Re: [PATCH v3 4/4] kexec, x86_64: Load bzImage64 above 4G
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To: Yinghai Lu <yinghai@kernel.org>
Cc: Haren Myneni <hbabu@us.ibm.com>, Simon Horman <horms@verge.net.au>, kexec@lists.infradead.org, "Eric W. Biederman" <ebiederm@xmission.com>, Vivek Goyal <vgoyal@redhat.com>

On 11/21/2012 12:47 PM, Yinghai Lu wrote:
>>>>
>>>> We should fix that limitation instead.
>>>
>>> sure, but that will make arch/x86/boot/compressed/head_64.S not need
>>> complicated.
>
> If that add cover cross GB boundary handling in head_64.S, may need
> another 100 line code
> for checking and etc.
>

That seems unlikely.

> Also will need another two spare pages for cross 512G boundary.

Doesn't seem like a problem.

Let me be blunt: either we do it right or we don't do it at all.

	-hpa

-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.


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