compile discontig with -Whch

diff -Nru a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
@@ -101,7 +101,7 @@
 filter_rsvd_memory (unsigned long start, unsigned long end, void *arg)
 {
 	unsigned long range_start, range_end, prev_start;
-	void (*func)(unsigned long, unsigned long);
+	void (*func)(unsigned long, unsigned long, int);
 	int i;
 
 #if IGNORE_PFN0

@@ -122,11 +122,8 @@
 		range_end   = min(end, rsvd_region[i].start);
 
 		if (range_start < range_end)
-#ifdef CONFIG_DISCONTIGMEM
-			call_pernode_memory(__pa(range_start), __pa(range_end), func);
-#else
-			(*func)(__pa(range_start), range_end - range_start);
-#endif
+			call_pernode_memory(__pa(range_start),
+					    range_end - range_start, func);
 
 		/* nothing more available in this segment */
 		if (range_end = end) return 0;

@@ -239,7 +236,6 @@
 	strlcpy(saved_command_line, *cmdline_p, sizeof(saved_command_line));
 
 	efi_init();
-	find_memory();
 
 #ifdef CONFIG_ACPI_BOOT
 	/* Initialize the ACPI boot-time table parser */

@@ -253,6 +249,8 @@
 # endif
 #endif /* CONFIG_APCI_BOOT */
 
+	find_memory();
+
 	/* process SAL system table: */
 	ia64_sal_init(efi.sal_systab);
 

@@ -544,28 +542,7 @@
 	struct cpuinfo_ia64 *cpu_info;
 	void *cpu_data;
 
-#ifdef CONFIG_SMP
-	int cpu;
-
-	/*
-	 * get_free_pages() cannot be used before cpu_init() done.  BSP allocates
-	 * "NR_CPUS" pages for all CPUs to avoid that AP calls get_zeroed_page().
-	 */
-	if (smp_processor_id() = 0) {
-		cpu_data = __alloc_bootmem(PERCPU_PAGE_SIZE * NR_CPUS, PERCPU_PAGE_SIZE,
-					   __pa(MAX_DMA_ADDRESS));
-		for (cpu = 0; cpu < NR_CPUS; cpu++) {
-			memcpy(cpu_data, __phys_per_cpu_start, __per_cpu_end - __per_cpu_start);
-			__per_cpu_offset[cpu] = (char *) cpu_data - __per_cpu_start;
-			cpu_data += PERCPU_PAGE_SIZE;
-
-			per_cpu(local_per_cpu_offset, cpu) = __per_cpu_offset[cpu];
-		}
-	}
-	cpu_data = __per_cpu_start + __per_cpu_offset[smp_processor_id()];
-#else /* !CONFIG_SMP */
-	cpu_data = __phys_per_cpu_start;
-#endif /* !CONFIG_SMP */
+	cpu_data = per_cpu_init();
 
 	get_max_cacheline_size();
 

@@ -576,9 +553,6 @@
 	 * accessing cpu_data() through the canonical per-CPU address.
 	 */
 	cpu_info = cpu_data + ((char *) &__ia64_per_cpu_var(cpu_info) - __per_cpu_start);
-#ifdef CONFIG_NUMA
-	cpu_info->node_data = get_node_data_ptr();
-#endif
 	identify_cpu(cpu_info);
 
 #ifdef CONFIG_MCKINLEY

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diff -Nru a/include/asm-ia64/meminit.h b/include/asm-ia64/meminit.h
@@ -31,10 +31,31 @@
 extern void reserve_memory (void);
 extern void find_initrd (void);
 extern int filter_rsvd_memory (unsigned long start, unsigned long end, void *arg);
+extern void paging_init(void);
+ 
+/*
+ * For rounding an address to the next IA64_GRANULE_SIZE or order
+ */
+#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_DISCONTIGMEM
-extern void call_pernode_memory (unsigned long start, unsigned long end, void *arg);
+extern void call_pernode_memory(unsigned long start, unsigned long len,
+				void *func);
+#else
+#define call_pernode_memory(start, len, func)	(*func)(start, len, 0)
 #endif
+
+#ifdef CONFIG_VIRTUAL_MEM_MAP
+#define LARGE_GAP 0x40000000 /* Use virtual mem map if hole is > than this */
+extern unsigned long vmalloc_end;
+extern struct page *vmem_map;
+extern unsigned long num_dma_physpages;
+extern int find_largest_hole(u64 start, u64 end, void *arg);
+extern int create_mem_map_page_table(u64 start, u64 end, void *arg);
+#endif
+
 
 #define IGNORE_PFN0	1	/* XXX fix me: ignore pfn 0 until TLB miss handler is updated... */
 

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diff -Nru a/include/asm-ia64/nodedata.h b/include/asm-ia64/nodedata.h
@@ -13,9 +13,12 @@
 #ifndef _ASM_IA64_NODEDATA_H
 #define _ASM_IA64_NODEDATA_H
 
-
+#include <linux/config.h>
+#include <asm/percpu.h>
 #include <asm/mmzone.h>
 
+#ifdef CONFIG_DISCONTIGMEM
+
 /*
  * Node Data. One of these structures is located on each node of a NUMA system.
  */

@@ -24,10 +27,7 @@
 struct ia64_node_data {
 	short			active_cpu_count;
 	short			node;
-        struct pglist_data	*pg_data_ptrs[NR_NODES];
-	struct page		*bank_mem_map_base[NR_BANKS];
-	struct ia64_node_data	*node_data_ptrs[NR_NODES];
-	short			node_id_map[NR_BANKS];
+	struct pglist_data	*pg_data_ptrs[NR_NODES];
 };
 
 

@@ -36,41 +36,23 @@
  */
 #define local_node_data		(local_cpu_data->node_data)
 
-
-/*
- * Return a pointer to the node_data structure for the specified node.
- */
-#define node_data(node)	(local_node_data->node_data_ptrs[node])
-
 /*
  * Get a pointer to the node_id/node_data for the current cpu.
  *    (boot time only)
  */
-extern int boot_get_local_nodeid(void);
-extern struct ia64_node_data *get_node_data_ptr(void);
+extern struct ia64_node_data *early_get_node_data(void);
 
 /*
  * Given a node id, return a pointer to the pg_data_t for the node.
- * The following 2 macros are similar. 
  *
  * NODE_DATA 	- should be used in all code not related to system
  *		  initialization. It uses pernode data structures to minimize
  *		  offnode memory references. However, these structure are not 
  *		  present during boot. This macro can be used once cpu_init
  *		  completes.
- *
- * BOOT_NODE_DATA
- *		- should be used during system initialization 
- *		  prior to freeing __initdata. It does not depend on the percpu
- *		  area being present.
- *
- * NOTE:   The names of these macros are misleading but are difficult to change
- *	   since they are used in generic linux & on other architecures.
  */
 #define NODE_DATA(nid)		(local_node_data->pg_data_ptrs[nid])
-#define BOOT_NODE_DATA(nid)	boot_get_pg_data_ptr((long)(nid))
 
-struct pglist_data;
-extern struct pglist_data * __init boot_get_pg_data_ptr(long);
+#endif /* CONFIG_DISCONTIGMEM */
 
 #endif /* _ASM_IA64_NODEDATA_H */

diff -Nru a/include/asm-ia64/numa.h b/include/asm-ia64/numa.h
@@ -13,18 +13,13 @@
 
 #include <linux/config.h>
 #include <linux/cpumask.h>
+#include <linux/cache.h>
+#include <linux/threads.h>
+#include <linux/smp.h>
+#include <asm/mmzone.h>
 
 #ifdef CONFIG_NUMA
 
-#ifdef CONFIG_DISCONTIGMEM
-# include <asm/mmzone.h>
-# define NR_MEMBLKS   (NR_BANKS)
-#else
-# define NR_NODES     (8)
-# define NR_MEMBLKS   (NR_NODES * 8)
-#endif
-
-#include <linux/cache.h>
 extern volatile char cpu_to_node_map[NR_CPUS] __cacheline_aligned;
 extern volatile cpumask_t node_to_cpu_mask[NR_NODES] __cacheline_aligned;
 

@@ -65,7 +60,10 @@
 
 extern int paddr_to_nid(unsigned long paddr);
 
-#define local_nodeid (cpu_to_node_map[smp_processor_id()])
+#else /* !CONFIG_NUMA */
+
+#define node_distance(from,to) 10
+#define paddr_to_nid(x) 0
 
 #endif /* CONFIG_NUMA */
 

diff -Nru a/include/asm-ia64/page.h b/include/asm-ia64/page.h
@@ -94,18 +94,17 @@
 
 #define virt_addr_valid(kaddr)	pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
 
-#ifndef CONFIG_DISCONTIGMEM
-# ifdef CONFIG_VIRTUAL_MEM_MAP
-   extern int ia64_pfn_valid (unsigned long pfn);
-#  define pfn_valid(pfn)	(((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
-# else
-#  define pfn_valid(pfn)	((pfn) < max_mapnr)
-# endif
+#ifdef CONFIG_VIRTUAL_MEM_MAP
+extern int ia64_pfn_valid (unsigned long pfn);
+#else
+#define ia64_pfn_valid(pfn)	1
+#endif
+
+#define pfn_valid(pfn)		(((pfn) < max_mapnr) && ia64_pfn_valid(pfn))
 #define virt_to_page(kaddr)	pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
 #define page_to_pfn(page)	((unsigned long) (page - mem_map))
 #define pfn_to_page(pfn)	(mem_map + (pfn))
 #define page_to_phys(page)	(page_to_pfn(page) << PAGE_SHIFT)
-#endif
 
 typedef union ia64_va {
 	struct {

diff -Nru a/include/asm-ia64/percpu.h b/include/asm-ia64/percpu.h
@@ -46,11 +46,13 @@
 
 extern void percpu_modcopy(void *pcpudst, const void *src, unsigned long size);
 extern void setup_per_cpu_areas (void);
+extern void *per_cpu_init(void);
 
 #else /* ! SMP */
 
 #define per_cpu(var, cpu)			((void)cpu, per_cpu__##var)
 #define __get_cpu_var(var)			per_cpu__##var
+#define per_cpu_init()				(__phys_per_cpu_start)
 
 #endif	/* SMP */
 

diff -Nru a/include/asm-ia64/pgtable.h b/include/asm-ia64/pgtable.h
@@ -174,7 +174,6 @@
 	return (addr & (local_cpu_data->unimpl_pa_mask)) = 0;
 }
 
-#ifndef CONFIG_DISCONTIGMEM
 /*
  * kern_addr_valid(ADDR) tests if ADDR is pointing to valid kernel
  * memory.  For the return value to be meaningful, ADDR must be >@@ -190,7 +189,6 @@

diff -Nru a/include/linux/mm.h b/include/linux/mm.h
@@ -13,7 +13,8 @@
 #include <linux/rbtree.h>
 #include <linux/fs.h>
 
-#ifndef CONFIG_DISCONTIGMEM          /* Don't use mapnrs, do it properly */
+#if defined(CONFIG_VIRTUAL_MEM_MAP) || !defined(CONFIG_DISCONTIGMEM)
+/* Don't use mapnrs, do it properly */
 extern unsigned long max_mapnr;
 #endif
 

@@ -340,7 +341,7 @@
 	page->flags |= zone_num << ZONE_SHIFT;
 }
 
-#ifndef CONFIG_DISCONTIGMEM
+#if defined(CONFIG_VIRTUAL_MEM_MAP) || !defined(CONFIG_DISCONTIGMEM)
 /* The array of struct pages - for discontigmem use pgdat->lmem_map */
 extern struct page *mem_map;
 #endif

diff -Nru a/kernel/ksyms.c b/kernel/ksyms.c
@@ -114,7 +114,7 @@
 EXPORT_SYMBOL(vunmap);
 EXPORT_SYMBOL(vmalloc_to_page);
 EXPORT_SYMBOL(remap_page_range);
-#ifndef CONFIG_DISCONTIGMEM
+#if defined(CONFIG_VIRTUAL_MEM_MAP) || !defined(CONFIG_DISCONTIGMEM)
 EXPORT_SYMBOL(contig_page_data);
 EXPORT_SYMBOL(mem_map);
 EXPORT_SYMBOL(max_mapnr);

diff -Nru a/mm/memory.c b/mm/memory.c
@@ -55,7 +55,7 @@
 
 #include <linux/swapops.h>
 
-#ifndef CONFIG_DISCONTIGMEM
+#if defined(CONFIG_VIRTUAL_MEM_MAP) || !defined(CONFIG_DISCONTIGMEM)
 /* use the per-pgdat data instead for discontigmem - mbligh */
 unsigned long max_mapnr;
 struct page *mem_map;

@@ -115,7 +115,7 @@
 EXPORT_SYMBOL(vmalloc_to_page);
 EXPORT_SYMBOL(remap_page_range);
 #if defined(CONFIG_VIRTUAL_MEM_MAP) || !defined(CONFIG_DISCONTIGMEM)
-EXPORT_SYMBOL(contig_page_data);
+//EXPORT_SYMBOL(contig_page_data);
 EXPORT_SYMBOL(mem_map);
 EXPORT_SYMBOL(max_mapnr);
 #endif