On (26/01/08 23:10), KOSAKI Motohiro didst pronounce: > Hi Mel > > > >To rule it out, can you also try with the patch below applied please? It > >should only make a difference on sparsemem so if discontigmem is still > >crashing, there is likely another problem. Assuming it crashes, please > >post the full dmesg output with loglevel=8 on the command line. Thanks > > I buy reverse serial cable today. > and I test again. >
Great > my patch stack is > 2.6.24-rc7 + > http://lkml.org/lkml/2007/8/24/220 + Can you replace this patch with the patch below instead and try again please? This is the patch that is actually in git-x86. Out of curiousity, have you tried the latest mm branch from git-x86? commit c824d2f33bf41e806cc975e659a711ba14927b62 diff --git a/arch/x86/mm/discontig_32.c b/arch/x86/mm/discontig_32.c index 88a7499..9f1d02c 100644 --- a/arch/x86/mm/discontig_32.c +++ b/arch/x86/mm/discontig_32.c @@ -268,6 +268,7 @@ unsigned long __init setup_memory(void) { int nid; unsigned long system_start_pfn, system_max_low_pfn; + unsigned long wasted_pages; /* * When mapping a NUMA machine we allocate the node_mem_map arrays @@ -292,7 +293,14 @@ unsigned long __init setup_memory(void) kva_start_pfn = PFN_DOWN(initrd_start - PAGE_OFFSET) - kva_pages; #endif - kva_start_pfn -= kva_start_pfn & (PTRS_PER_PTE-1); + + /* + * We waste pages past at the end of the KVA for no good reason other + * than how it is located. This is bad. + */ + wasted_pages = kva_start_pfn & (PTRS_PER_PTE-1); + kva_start_pfn -= wasted_pages; + kva_pages += wasted_pages; system_max_low_pfn = max_low_pfn = find_max_low_pfn(); printk("kva_start_pfn ~ %ld find_max_low_pfn() ~ %ld\n", @@ -345,7 +353,8 @@ unsigned long __init setup_memory(void) void __init numa_kva_reserve(void) { - reserve_bootmem(PFN_PHYS(kva_start_pfn),PFN_PHYS(kva_pages)); + if (kva_pages) + reserve_bootmem(PFN_PHYS(kva_start_pfn), PFN_PHYS(kva_pages)); } void __init zone_sizes_init(void) -- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
