linux-kernel - Re: [PATCH] kexec: include sysctl to disable

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Message-ID: <20110127185021.GE23047@redhat.com>
Date:	Thu, 27 Jan 2011 13:50:21 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Eric Paris <eparis@...isplace.org>
Cc:	WANG Cong <xiyou.wangcong@...il.com>,
	Eric Paris <eparis@...hat.com>, linux-kernel@...r.kernel.org,
	kexec@...ts.infradead.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: Re: [PATCH] kexec: include sysctl to disable

On Thu, Jan 27, 2011 at 01:40:02PM -0500, Eric Paris wrote:
> Ping, not hearing any argument is usually a good thing   :)
> 

So if we allowing locking down module loading, why not allow locking down
kexec kernel loading, hence...

Acked-by: Vivek Goyal <vgoyal@...hat.com>

Vivek

> -Eric
> 
> On Thu, Jan 20, 2011 at 12:32 AM, WANG Cong <xiyou.wangcong@...il.com> wrote:
> 
> >> On Wed, 19 Jan 2011 17:26:30 -0500, Eric Paris wrote:
> >>
> >>> much like /proc/sys/kernel/modules_disable is used to disable module
> >>> loading, /proc/sys/kernel/kexec_disable is used to disable kexec code
> >>> loading.  It would still be possible to use kexec -l to load a kernel,
> >>> set the tunable to 1 so the kernel waiting to boot couldn't change, and
> >>> then launch the kernel at a later time (through kexec -e or through a
> >>> crash)
> 
> > Acked-by: WANG Cong <xiyou.wangcong@...il.com>
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