linux-kernel - Re: [ 105/128] efi: Make efi_enabled a function to query EFI facilities

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Date:	Wed, 06 Feb 2013 04:45:41 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Greg KH <gregkh@...uxfoundation.org>
Cc:	Matt Fleming <matt.fleming@...el.com>,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	akpm@...ux-foundation.org, David Airlie <airlied@...ux.ie>,
	Corentin Chary <corentincj@...aif.net>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Dave Jiang <dave.jiang@...el.com>,
	Olof Johansson <olof@...om.net>,
	Peter Jones <pjones@...hat.com>,
	Colin Ian King <colin.king@...onical.com>,
	Steve Langasek <steve.langasek@...onical.com>,
	Tony Luck <tony.luck@...el.com>,
	Konrad Rzeszutek Wilk <konrad@...nel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Subject: Re: [ 105/128] efi: Make efi_enabled a function to query EFI
 facilities

On Mon, 2013-02-04 at 10:20 -0800, Greg KH wrote:
> On Mon, Feb 04, 2013 at 04:44:25PM +0000, Matt Fleming wrote:
> > On Sun, 2013-02-03 at 16:15 +0100, Ben Hutchings wrote:
> > > As you can see this needed quite a lot of work to backport, and I
> > > haven't been able to test it yet.  So I would particularly appreciate
> > > careful review of this.
> > 
> > Everything looks fine to me but I haven't actually booted with these
> > changes.
> 
> I didn't backport this to the 3.4 kernel, as I didn't think it really
> was necessary, but now that Ben did all of the hard work, I'll see if
> his version applies there, as it would be good to solve this issue for
> that kernel release.  Thanks for verifying that this work at least looks
> sane.

No, my backporting work for 3.2 is not applicable and not needed on 3.4.
I think you just need to adjust context in arch/x86/kernel/setup.c and
init/main.c.

Ben.

-- 
Ben Hutchings
Everything should be made as simple as possible, but not simpler.
                                                           - Albert Einstein

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