[PATCH 01/24] drm/radeon: remove fence/ring/ib debugfs files

[David Airlie]

----- Original Message -----
> From: "Christian König" <deathsimple at vodafone.de>
> To: "j glisse" <j.glisse at gmail.com>
> Cc: "Jerome Glisse" <jglisse at redhat.com>, dri-devel at lists.freedesktop.org
> Sent: Thursday, 26 April, 2012 10:11:12 AM
> Subject: Re: [PATCH 01/24] drm/radeon: remove fence/ring/ib debugfs files
> 
> Hi Jerome,
> 
> I totally agree that we can remove the following debugfs files, since
> everything that just prints out or modifies register informations
> doesn't belongs into the kernel driver and should be moved to
> radeontool
> instead.

In the future with secure boot we will need a better mechanism to diagnose things
than a userspace tool mapping pci bars, which we can't allow to happen in a secure
boot environment, so dropping all the files might not be a good idea unless we
provide a mechanism for radeontool to use. We can't allow userspace to read/write
arbitrary registers and stay secure.

Dave.