According to the table on IHD_OS_Vol1_Part2.pdf pg 16 a 1GB address space is only supported with a per process graphics translation table (PPGTT) which we don't currently handle.
0x11 isn't documented as being 1GB for perhaps the same reason, see ie IHD_OS_Vol3_Part2.pdf pg 26. On Sat, Dec 01, 2012 at 10:15:53PM -0500, [email protected] wrote: > >Synopsis: Ivy Bridge + 1 GB shared GPU disables intagp, panics inteldrm > >Category: kernel amd64 > >Environment: > System : OpenBSD 5.2 > Details : OpenBSD 5.2-current (GENERIC) #0: Sat Dec 1 16:59:33 EST > 2012 > > [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC > > Architecture: OpenBSD.amd64 > Machine : amd64 > >Description: > On my Ivy Bridge i5-3570k based system, using the latest snapshots, the > kernel panics if I set my integrated intel GPU to share 1 GB of memory. I > have a trivial patch to get intagp to handle this case. I came up with it by > repeating the structure already found in the code. The system boots fine > afterwards, and I was able to start X11 earlier in the day, multiple times, > without any crashes or hangs. The following message appeared numerous times > in the console when running X11: "intagp: binding into stolen memory! > (0x____)" [NB _ is a placeholder]. > Unfortunately, I am not having any success starting X11 with 1 GB shared > memory in the evening. I scaled my shared memory usage down to 128 MB to file > this report.
