Re: Is it useful to support user level drivers

[Mike Mackovitch]

On Thu, Jun 21, 2001 at 04:22:32PM -0700, David S. Miller wrote:
> 
> Mike Mackovitch writes:
>  > Sorry, but SGI's IRIX does NOT handle graphics interrupts in user space.
> 
> What the heck is ULI then?  I've actually read the assembly code for
> this back when I did my SGI internship.

If my memory serves me correctly, I believe ULI was some
hacked up "user-level interrupt" feature.  I have no idea
who (if anyone) used it, but it definitely wasn't used by
SGI's graphics drivers.

--macko