Subject: Re: device driver for the SGI system clock, mmtimer
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Jesse Barnes <jbarnes@engr.sgi.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>, Christoph Lameter <clameter@sgi.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Bob Picco <Robert.Picco@hp.com>, venkatesh.pallipadi@intel.com
In-Reply-To: <200409160909.12840.jbarnes@engr.sgi.com>
References: <200409161003.39258.bjorn.helgaas@hp.com>
	 <200409160909.12840.jbarnes@engr.sgi.com>
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Date: Thu, 16 Sep 2004 16:52:21 +0100
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On Iau, 2004-09-16 at 17:09, Jesse Barnes wrote:
> I think Christoph already looked at that.  And HPET doesn't provide mmap 
> functionality, does it?  I.e. allow a userspace program to dereference the 
> counter register directly?

It can do but that assumes nothing else is mapped into the same page
that would be harmful or reveal information that should not be revealed
etc..

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