On Sat, Oct 25, 2008 at 11:55:25PM -0400, Christos Zoulas wrote: > I need to be able to match the GUGS_IPL number between linux and us > (like FreeBSD did, is this OK to commit? Probably not, check the Intel manual for the sysenter instruction (2A or 2B?) and see what the requirements are for descriptor layout. I'd tell you but I don't remember off the top of my head. Andrew