Re: /dev/mem "unbounded?"

From: Andrei Warkentin
Date: Thu Nov 10 2011 - 00:10:09 EST


Hi Peter,

----- Original Message -----
> From: "H. Peter Anvin" <hpa@xxxxxxxxx>
> To: "Andrei Warkentin" <awarkentin@xxxxxxxxxx>
> Cc: "LKML" <linux-kernel@xxxxxxxxxxxxxxx>
> 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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