Comment # 5 on bug 95427 from Chris Wilson

(In reply to Emil Velikov from comment #3)
> Guys have you actually looked at the following line ?
> Aperture size is 268435456 MiB -- That is 256 TiB !!!
> 
> That's rather impossible amount if you ask me. So there's either a bug in
> IGT's gem_aperture_size() or one of the two ioctls

It is correct. The GTT size is 1<<48 bytes.