> Well, I think that option makes sense to protect the system > from processes that *accidentally* read/write to the wrong memory > location (like the X server that always runs as root). Older X drivers very carefully only map the memory they need. They also unmap and remap as well as using iopl/ioperm ranges to avoid such accidents. Newer ones are all DMA command chains and stuff so it won't make one iota of difference. -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html