Hi. I guess the subject says it all, but I'll give more detail: I'm working on Suspend on a 8 cpu ("8 way"?) SMP box at OSDL, which has something in excess of 4GB, but I'm only using 4 at the moment: Warning only 4GB will be used. Use a PAE enabled kernel. 3200MB HIGHMEM available. 896MB LOWMEM available. When suspending, I am seeing pages that don't have the HighMem flag set, but for which page_address returns zero. I looked at kmap, and noticed that it tests for page < highmem_start_page; I guess this is the way to do it? Regards, Nigel -- My work on Software Suspend is graciously brought to you by LinuxFund.org.