linux-kernel - Re: [RFC] Second attempt at kernel secure boot support

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Message-ID: <5093FADA.2040004@genband.com>
Date:	Fri, 02 Nov 2012 10:54:50 -0600
From:	Chris Friesen <chris.friesen@...band.com>
To:	Vivek Goyal <vgoyal@...hat.com>
CC:	Pavel Machek <pavel@....cz>, Eric Paris <eparis@...isplace.org>,
	James Bottomley <James.Bottomley@...senpartnership.com>,
	Jiri Kosina <jkosina@...e.cz>, Oliver Neukum <oneukum@...e.de>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Josh Boyer <jwboyer@...il.com>, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, linux-efi@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [RFC] Second attempt at kernel secure boot support

On 11/02/2012 09:48 AM, Vivek Goyal wrote:
> On Thu, Nov 01, 2012 at 03:02:25PM -0600, Chris Friesen wrote:

>> With secure boot enabled, then the kernel should refuse to let an
>> unsigned kexec load new images, and kexec itself should refuse to
>> load unsigned images.
>
> Yep, good in theory. Now that basically means reimplementing kexec-tools
> in kernel.

Maybe I'm missing something, but couldn't the vendors provide a signed 
kexec?  Why does extra stuff need to be pushed into the kernel?

Chris
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