"Frank C. Earl" wrote: > > On Monday 18 February 2002 10:35 pm, Keith Whitwell wrote: > > > The rings are in agp space. It's a bug in the security model of the i810, > > it's arcane, but believe me it's real. > > Which leaves it open to attack because the AGP space isn't covered by the > protection system. Got to wonder what they were thinking with that- to come > up with a nice scheme for protecting the system against rogue code submitted > from userspace to leave it open like that. I guess they thought it'd be > difficult to implement an exploit with that. I ought to read up more on the > rings- I got the impression from the documentation that they were just out in > memory and were purely DMAed from anywhere in system memory.
I'm pretty sure it was an oversight. I don't think I can talk about why I think that, though... Keith _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
