The patch you are referring to does not disable GEM support, it only provides an option to turn it on or off at build time. According to that, it's on by default (and I think that's how it should be -- GEM is the "right way" to go about memory management, it just isn't completely supported by all drivers yet).
Ofir:
The patch you are referring to does not disable GEM support, it only provides an option to turn it on or off at build time. According to that, it's on by default (and I think that's how it should be -- GEM is the "right way" to go about memory management, it just isn't completely supported by all drivers yet).