linux-kernel - Re: [PATCH 2/5] x86_64 EFI support -v3: EFI boot support

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Date:	Wed, 1 Aug 2007 14:56:21 +0200
From:	Andi Kleen <ak@...ell.com>
To:	"Huang, Ying" <ying.huang@...el.com>
Cc:	akpm@...ux-foundation.org, Yinghai Lu <yhlu.kernel@...il.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Chandramouli Narayanan <mouli@...ux.intel.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] x86_64 EFI support -v3: EFI boot support


> 
> Should I change "change_page_attr" to make it work before "mem_init"? Or
> Should I change "init_memory_mapping" to make it can be used to change
> mapping attributes? Which one is better?

It's probably better to change init_memory_mapping. Just do it cleanly 
and correctly please. As in only change the pages that straddle the 
EFI areas and don't use globals.

BTW i don't see any such code on i386. How does the EFI support
there handle it?

-Andi
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