linux-kernel - Re: [PATCH 1/4] Documentation: arm: [U]EFI runtime services

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Message-ID: <20130626135933.GQ22026@console-pimps.org>
Date:	Wed, 26 Jun 2013 14:59:33 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Leif Lindholm <leif.lindholm@...aro.org>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Stephen Warren <swarren@...dotorg.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>, linux-efi@...r.kernel.org,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"patches@...aro.org" <patches@...aro.org>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>, matt.fleming@...el.com
Subject: Re: [PATCH 1/4] Documentation: arm: [U]EFI runtime services

On Wed, 26 Jun, at 03:53:11PM, Leif Lindholm wrote:
> It's completely feasible, but we'd need to use a different method to do
> the boot services call with a 1:1 mapping (idmap support is not available
> until much later in the boot process).

At least if you no longer relied upon the idmap we could potentially
have a single efi_enter_virtual_mode() call-site in init/main.c, which
would be nice.

-- 
Matt Fleming, Intel Open Source Technology Center
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