This patch was originally written by Martin Bligh. It changes all references of node_start_paddr and zone_start_paddr to node_start_pfn and zone_start_pfn. This change is required to support PAE for i386 discontigmem. It allows a starting address for a node or zone to be greater than 4GB. A version of this patch is in the 2.4 aa tree and has also been accepted into the v2.5 tree starting with 2.5.34. I've tested this patch on the following configurations: UP, SMP, SMP PAE, multiquad, multiquad PAE, multiquad DISCONTIGMEM, multiquad DISCONTIGMEM PAE. Any and all feedback regarding this patch is greatly appreciated. Thanks, Pat -- Patricia Gaughen (gone@us.ibm.com) IBM Linux Technology Center http://www.ibm.com/linux/ltc/