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

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Message-ID: <20130627172817.GB16316@srcf.ucam.org>
Date:	Thu, 27 Jun 2013 18:28:17 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Matt Fleming <matt@...sole-pimps.org>,
	Leif Lindholm <leif.lindholm@...aro.org>,
	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 Thu, Jun 27, 2013 at 08:09:50AM -0700, James Bottomley wrote:
> On Thu, 2013-06-27 at 15:37 +0100, Matthew Garrett wrote:
> > And yet it's the only mode in which the firmrware is actually tested 
> > against an OS, so we don't have any real choice in the matter.
> 
> Agree for x86 ... we just have to cope with the implementations we see
> in the field.  However, ARM has much more scope to have the UEFI
> implementation developed collaboratively with Linux as the reference
> platform.  If we can convince the ARM implementors that
> SetVirtualAddressMap is an accident waiting to happen, they might be
> more flexible.

The majority of existing ARM UEFI implementations have only ever been 
used to boot Windows, so like I said, this really isn't a safe 
assumption.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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