FB model basic issues (WAS: radeon, apertures & memory mapping)

[Ian Romanick]

Jon Smirl wrote:

> Can we put in our own fault handler for the mmap, trap the directfb
> accesses and do the proper locking?

Some SGI hardware used to work like that.  When they asked Linus for 
some kernel hooks to support that type of thing, well...I'm just glad 
*I* wasn't in the line of fire. ;)  I seriously doubt that it would be 
looked upon any kinder now.