multiseat

[Jesse Barnes]

On Thursday, July 28, 2005 12:14 pm, Jon Smirl wrote:
> Ben's plan is to group the video cards into two categories, good and
> bad. Bad cards need VGA at run time, good cards do not.  You can have
> one bad card and as many good ones as you want. Posting is
> sequentialized so that each card can use the VGA ports.

Sounds nice, I hope Ben has a chance to do it sometime this year, he 
always takes on too much stuff. :)

> On super fancy machines you can have one bad card per bus since the
> bridges can be used to isolate them.  You'll probably still have to
> access them sequentially because of the A000 memory hole.

The only platform I know of with this capability is the Altix, and it 
implements the VGA memory space on a per-bus basis as well, so all 
cards, good and bad, can be posted in parallel if someone feels so 
inclined.  Too bad all platforms aren't that easy (though of course one 
still has to deal with multiple cards per bus somehow).

Jesse