Re: [Dri-devel] Re: [Linux-fbdev-devel] DRM and pci_driver conversion

[Jeff Garzik <jgarzik@pobox.com>]

On Mon, Oct 27, 2003 at 03:14:11PM +0000, Keith Whitwell wrote:
> Jeff Garzik wrote:
> >Thank you for saying it.  This is what I have been preaching (quietly) 
> >for years -- command submission and synchronization (and thus, DMA/irq 
> >handling) needs to be in the kernel.  Everything else can be in 
> >userspace (excluding hardware enable/enumerate, of course).
> 
> To enable secure direct rendering on current hardware (ie without secure 
> command submission mechanisms), you need command valididation somewhere.  
> This could be a layer on top of the minimal dma engine Linus describes.

Certainly.


> >Graphics processors are growing more general, too -- moving towards 
> >generic vector/data processing engines.  I bet you'll see an optimal 
> >model emerge where you have some sort of "JIT" for GPU microcode in 
> >userspace.  
> 
> You mean like the programmable fragment and vertex hardware that has been 
> in use for a couple of years now?

I mean, taking current fragment and vertex processing and making it
even _more_ general.  Which has already happened, on one particular chip
maker's chip...

	Jeff