linux-kernel - Re: [PATCH] x86, efi: 1:1 pagetable mapping for virtual EFI calls

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Message-ID: <5048D83D.8000408@zytor.com>
Date:	Thu, 06 Sep 2012 10:07:09 -0700
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Matt Fleming <matt.fleming@...el.com>
CC:	Jan Beulich <JBeulich@...e.com>, Vasco Dias <rafa.vasco@...il.com>,
	Matthew Garrett <mjg@...hat.com>, linux-efi@...r.kernel.org,
	linux-kernel@...r.kernel.org, cJ-ko@...gloub.eu
Subject: Re: [PATCH] x86, efi: 1:1 pagetable mapping for virtual EFI calls

Anyone care to refresh my memory why we can't use the "global" 
1:1+kernel map, possibly with some improvements (which would benefit the 
users of those maps too)?  With that I mean initial_page_map on i386 and 
trampoline_pgd on x86-64...

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

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