linux-kernel - Re: /dev/mem "unbounded?"

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Date:	Wed, 9 Nov 2011 21:10:00 -0800 (PST)
From:	Andrei Warkentin <awarkentin@...are.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: /dev/mem "unbounded?"

Hi Peter,

----- Original Message -----
> From: "H. Peter Anvin" <hpa@...or.com>
> To: "Andrei Warkentin" <awarkentin@...are.com>
> Cc: "LKML" <linux-kernel@...r.kernel.org>
> Sent: Wednesday, November 9, 2011 7:11:42 PM
> Subject: Re: /dev/mem "unbounded?"
> 
> 
> Well, that mechanism is broken.  The way it *should* work is that any
> region which is system RAM should be denied access, and the rest is
> accessible.  The current behavior is a hack due to the behavior of
> some
> old versions of Xorg, but that has long been fixed.
> 

Ah, ok, that seems very reasonable. Thank you for clarifying!

A
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