Re: [PATCH] x86: introduce /dev/mem restrictions with a configoption

[Arjan van de Ven]

On Thu, 31 Jan 2008 17:53:04 +0100 (CET)
Jan Engelhardt <jengelh@xxxxxxxxxxxxxxx> wrote:

> 
> On Jan 30 2008 12:48, Arjan van de Ven wrote:
> >Subject: [PATCH] x86: introduce /dev/mem restrictions with a config
> >option
> >
> >This patch introduces a restriction on /dev/mem: Only non-memory can
> >be read or written unless the newly introduced config option is set.
> 
> Would not it be nicer to add a /dev/pcimem that implements the given 
> restrictive semantics?
> 
> Maybe it's just wishful thinking, but I am dreaming of an
> unprivileged X, and /dev/pcimem (owned by an 'x11' user or so) would
> be a step in that direction.

/dev/pcimem is wrong; X can use the exact bar in sysfs already.
This is more for compatibility with legacy X


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