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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <1349706500.15966.165.camel@mfleming-mobl1.ger.corp.intel.com>
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

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