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Date:	Thu, 2 Oct 2008 11:05:59 +0200 (CEST)
From:	Thomas Gleixner <>
To:	Arjan van de Ven <>
cc:	Linus Torvalds <>,
	Jesse Brandeburg <>,,,,, Bruce Allan <>
Subject: Re: [PATCH] e1000e: write protect ICHx NVM to prevent malicious

On Wed, 1 Oct 2008, Arjan van de Ven wrote:

> Linus Torvalds wrote:
> > 
> > On Wed, 1 Oct 2008, Jesse Brandeburg wrote:
> > > From: Bruce Allan <>
> > > 
> > > Set the hardware to ignore all write/erase cycles to the GbE region in
> > > the ICHx NVM.  This feature can be disabled by the WriteProtectNVM module
> > > parameter (enabled by default) only after a hardware reset, but
> > > the machine must be power cycled before trying to enable writes.
> > 
> > Thanks, applied.
> > 
> > One thing that I did notice when I looked at the driver is that I don't see
> > any serialization what-so-ever around a lot of the special accesses.
> > 
> there's quite a few of that yes.
> These are all fixed afaik but these fixes are being queued for 2.6.28 rather
> than being snuck in late into .27
> (the patches have been posted to lkml a few times the last week)

Hmm. The mutex around the nvram acquire catched at least a couple of
problems and IMHO they are serious enough to go into .27. At least to
make sure that we do not accidentaly reenter the nvram functions under
any circumstances.


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