Re: Add a "enable" sysfs attribute to the pci devices to allow userspace (Xorg) to enable devices without doing foul direct access

[Jesse Barnes]

> > But I hope that when X uses this, it only enables & disables VGA
> > devices it's actually using.  In the past, it seems like X has
> > blindly disabled *all* VGA devices in the system, even though
> > they might be in use by another X server.  I'm sure that's all
> > well-understood and cleaned up now; just wanted to make sure
> > this nightmare didn't recur.
>
> Hopefully with the recent PCI changes to X, this will not happen.  If
> it does, that's a big bug in X :)

On some machines it still has no alternative, since the kernel doesn't 
have a VGA arbiter of any kind.  Yes this sucks.

Jesse
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