Hi, makedumpfile[1] cannot run on ia64 discontigmem kernel, because the member node_mem_map of struct pgdat_list has invalid value. This patch fixes it. node_start_pfn shows the start pfn of each node, and node_mem_map should point 'struct page' of each node's node_start_pfn. On my machine, node0's node_start_pfn shows 0x400 and its node_mem_map points 0xa0007fffbf000000. This address is the same as vmem_map, so the node_mem_map points 'struct page' of pfn 0, even if its node_start_pfn shows 0x400. The cause is due to the round down of min_pfn in count_node_pages() and node0's node_mem_map points 'struct page' of inactive pfn (0x0). This patch fixes it. makedumpfile[1]: dump filtering command https://sourceforge.net/projects/makedumpfile/ Signed-off-by: Ken'ichi Ohmichi <oomichi at mxs.nes.nec.co.jp> --- --- a/arch/ia64/mm/discontig.c 2008-08-29 23:05:52.000000000 +0900 +++ b/arch/ia64/mm/discontig.c 2008-08-29 23:06:59.000000000 +0900 @@ -631,7 +631,6 @@ static __init int count_node_pages(unsig (min(end, __pa(MAX_DMA_ADDRESS)) - start) >>PAGE_SHIFT; #endif start = GRANULEROUNDDOWN(start); - start = ORDERROUNDDOWN(start); end = GRANULEROUNDUP(end); mem_data[node].max_pfn = max(mem_data[node].max_pfn, end >> PAGE_SHIFT); --- a/include/asm-ia64/meminit.h 2008-08-29 23:06:36.000000000 +0900 +++ b/include/asm-ia64/meminit.h 2008-08-29 23:06:48.000000000 +0900 @@ -47,7 +47,6 @@ extern int reserve_elfcorehdr(unsigned l */ #define GRANULEROUNDDOWN(n) ((n) & ~(IA64_GRANULE_SIZE-1)) #define GRANULEROUNDUP(n) (((n)+IA64_GRANULE_SIZE-1) & ~(IA64_GRANULE_SIZE-1)) -#define ORDERROUNDDOWN(n) ((n) & ~((PAGE_SIZE<<MAX_ORDER)-1)) #ifdef CONFIG_NUMA extern void call_pernode_memory (unsigned long start, unsigned long len, void *func); _
