Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S1758320Ab3FCOaU (ORCPT <rfc822;w@1wt.eu>);
	Mon, 3 Jun 2013 10:30:20 -0400
Received: from cavan.codon.org.uk ([93.93.128.6]:40679 "EHLO
	cavan.codon.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
	with ESMTP id S1751791Ab3FCOaQ (ORCPT
	<rfc822;linux-kernel@vger.kernel.org>);
	Mon, 3 Jun 2013 10:30:16 -0400
Date: Mon, 3 Jun 2013 15:30:10 +0100
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Borislav Petkov <bp@alien8.de>, Linux EFI <linux-efi@vger.kernel.org>,
        Matt Fleming <matt@console-pimps.org>, Jiri Kosina <jkosina@suse.cz>,
        X86-ML <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>,
        Borislav Petkov <bp@suse.de>
Subject: Re: [PATCH 0/4] EFI 1:1 mapping
Message-ID: <20130603143010.GA20252@srcf.ucam.org>
References: <1370177770-26661-1-git-send-email-bp@alien8.de>
 <20130602225620.GA5496@srcf.ucam.org>
 <20130603081148.GB13607@nazgul.tnic>
 <1370269642.2910.4.camel@dabdike>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1370269642.2910.4.camel@dabdike>
User-Agent: Mutt/1.5.20 (2009-06-14)
X-SA-Exim-Connect-IP: <locally generated>
X-SA-Exim-Mail-From: mjg59@cavan.codon.org.uk
X-SA-Exim-Scanned: No (on cavan.codon.org.uk); SAEximRunCond expanded to false
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 826
Lines: 18

On Mon, Jun 03, 2013 at 07:27:22AM -0700, James Bottomley wrote:

> That's correct.  I think not calling SetVirtualAddressMap() and just
> using a 1:1 mapping is far safer (having looked at what tianocore does
> for SetVirtualAddressMap()).  The chances are that all the UEFI bioses
> are only tested with windows, so the pointer chases it has to do to
> switch address maps only work with the operations windows does.

Windows calls SetVirtualAddressMap(), so the only way these systems have 
been tested is with SetVirtualAddressMap().

-- 
Matthew Garrett | mjg59@srcf.ucam.org
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/