linux-kernel - Re: [PATCH] x86: efi: Turn off efi_enabled after setup on mixed fw/kernel

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Date:	Mon, 08 Oct 2012 15:28:20 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Olof Johansson <olof@...om.net>
Cc:	hpa@...or.com, linux-kernel@...r.kernel.org, mk@....su,
	Marko Kohtala <marko.kohtala@...il.com>,
	Matthew Garrett <mjg@...hat.com>,
	Maarten Lankhorst <maarten.lankhorst@...onical.com>
Subject: Re: [PATCH] x86: efi: Turn off efi_enabled after setup on mixed
 fw/kernel

On Sun, 2012-08-19 at 14:48 -0700, Olof Johansson wrote:
> When 32-bit EFI is used with 64-bit kernel (or vice versa), turn off
> efi_enabled once setup is done. Beyond setup, it is normally used to
> determine if runtime services are available and we will have none.
> 
> This will resolve issues stemming from efivars modprobe panicking on a
> 32/64-bit setup, as well as some reboot issues on similar setups.
> 
> Signed-off-by: Olof Johansson <olof@...om.net>
> Cc: stable@...nel.org # 3.4 and 3.5
> Cc: Matt Fleming <matt.fleming@...el.com>
> Cc: Matthew Garrett <mjg@...hat.com>
> ---
>  arch/x86/kernel/setup.c     | 11 +++++++++++
>  arch/x86/platform/efi/efi.c | 14 ++++++++------
>  2 files changed, 19 insertions(+), 6 deletions(-)

Olof,

Would you mind resubmitting this patch and addressing Maarten's comment
about efi_is_native()?

-- 
Matt Fleming, Intel Open Source Technology Center

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