ppc64: Fix overallocation of NUMA bootmem bitmap and fix for NUMA kernels on non NUMA boxes

arch/ppc64/mm/numa.c

@@ -174,6 +174,20 @@ static int __init parse_numa_properties(void)
 	return 0;
 }
 
+void setup_nonnuma(void)
+{
+	unsigned long i;
+
+	for (i = 0; i < NR_CPUS; i++)
+		map_cpu_to_node(i, 0);
+
+	node_data[0].node_start_pfn = 0;
+	node_data[0].node_size = lmb_end_of_DRAM() / PAGE_SIZE;
+
+	for (i = 0 ; i < lmb_end_of_DRAM(); i += MEMORY_INCREMENT)
+		numa_memory_lookup_table[i >> MEMORY_INCREMENT_SHIFT] = 0;
+}
+
 void __init do_init_bootmem(void)
 {
 	int nid;
@@ -181,9 +195,8 @@ void __init do_init_bootmem(void)
 	min_low_pfn = 0;
 	max_low_pfn = lmb_end_of_DRAM() >> PAGE_SHIFT;
 
-	/* XXX FIXME: support machines without associativity information */
 	if (parse_numa_properties())
-		BUG();
+		setup_nonnuma();
 
 	for (nid = 0; nid < numnodes; nid++) {
 		unsigned long start_paddr, end_paddr;
@@ -204,7 +217,7 @@ void __init do_init_bootmem(void)
 
 		NODE_DATA(nid)->bdata = &plat_node_bdata[nid];
 
-		bootmap_pages = bootmem_bootmap_pages(end_paddr - start_paddr);
+		bootmap_pages = bootmem_bootmap_pages((end_paddr - start_paddr) >> PAGE_SHIFT);
 		dbg("bootmap_pages = %lx\n", bootmap_pages);
 
 		bootmem_paddr = lmb_alloc_base(bootmap_pages << PAGE_SHIFT,