ia64: switch to NO_BOOTMEM

Since ia64 already uses memblock to register available physical memory it
is only required to move the calls to register_active_ranges() that wrap
memblock_add_node() earlier and replace bootmem memory reservations with
memblock_reserve(). Of course, all the code that find the place to put the
bootmem bitmap is removed.

Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

1 files changed, 5 insertions, 66 deletions

diff --git a/arch/ia64/mm/contig.c b/arch/ia64/mm/contig.c
index 1835144268ec..e2e40bbd391c 100644
--- a/arch/ia64/mm/contig.c
+++ b/arch/ia64/mm/contig.c
@@ -34,53 +34,6 @@ static unsigned long max_gap;
 /* physical address where the bootmem map is located */
 unsigned long bootmap_start;
 
-/**
- * find_bootmap_location - callback to find a memory area for the bootmap
- * @start: start of region
- * @end: end of region
- * @arg: unused callback data
- *
- * Find a place to put the bootmap and return its starting address in
- * bootmap_start.  This address must be page-aligned.
- */
-static int __init
-find_bootmap_location (u64 start, u64 end, void *arg)
-{
-	u64 needed = *(unsigned long *)arg;
-	u64 range_start, range_end, free_start;
-	int i;
-
-#if IGNORE_PFN0
-	if (start == PAGE_OFFSET) {
-		start += PAGE_SIZE;
-		if (start >= end)
-			return 0;
-	}
-#endif
-
-	free_start = PAGE_OFFSET;
-
-	for (i = 0; i < num_rsvd_regions; i++) {
-		range_start = max(start, free_start);
-		range_end   = min(end, rsvd_region[i].start & PAGE_MASK);
-
-		free_start = PAGE_ALIGN(rsvd_region[i].end);
-
-		if (range_end <= range_start)
-			continue; /* skip over empty range */
-
-		if (range_end - range_start >= needed) {
-			bootmap_start = __pa(range_start);
-			return -1;	/* done */
-		}
-
-		/* nothing more available in this segment */
-		if (range_end == end)
-			return 0;
-	}
-	return 0;
-}
-
 #ifdef CONFIG_SMP
 static void *cpu_data;
 /**
@@ -196,8 +149,6 @@ setup_per_cpu_areas(void)
 void __init
 find_memory (void)
 {
-	unsigned long bootmap_size;
-
 	reserve_memory();
 
 	/* first find highest page frame number */
@@ -205,21 +156,12 @@ find_memory (void)
 	max_low_pfn = 0;
 	efi_memmap_walk(find_max_min_low_pfn, NULL);
 	max_pfn = max_low_pfn;
-	/* how many bytes to cover all the pages */
-	bootmap_size = bootmem_bootmap_pages(max_pfn) << PAGE_SHIFT;
 
-	/* look for a location to hold the bootmap */
-	bootmap_start = ~0UL;
-	efi_memmap_walk(find_bootmap_location, &bootmap_size);
-	if (bootmap_start == ~0UL)
-		panic("Cannot find %ld bytes for bootmap\n", bootmap_size);
-
-	bootmap_size = init_bootmem_node(NODE_DATA(0),
-			(bootmap_start >> PAGE_SHIFT), 0, max_pfn);
-
-	/* Free all available memory, then mark bootmem-map as being in use. */
-	efi_memmap_walk(filter_rsvd_memory, free_bootmem);
-	reserve_bootmem(bootmap_start, bootmap_size, BOOTMEM_DEFAULT);
+#ifdef CONFIG_VIRTUAL_MEM_MAP
+	efi_memmap_walk(filter_memory, register_active_ranges);
+#else
+	memblock_add_node(0, PFN_PHYS(max_low_pfn), 0);
+#endif
 
 	find_initrd();
 
@@ -244,7 +186,6 @@ paging_init (void)
 	max_zone_pfns[ZONE_NORMAL] = max_low_pfn;
 
 #ifdef CONFIG_VIRTUAL_MEM_MAP
-	efi_memmap_walk(filter_memory, register_active_ranges);
 	efi_memmap_walk(find_largest_hole, (u64 *)&max_gap);
 	if (max_gap < LARGE_GAP) {
 		vmem_map = (struct page *) 0;
@@ -268,8 +209,6 @@ paging_init (void)
 
 		printk("Virtual mem_map starts at 0x%p\n", mem_map);
 	}
-#else /* !CONFIG_VIRTUAL_MEM_MAP */
-	memblock_add_node(0, PFN_PHYS(max_low_pfn), 0);
 #endif /* !CONFIG_VIRTUAL_MEM_MAP */
 	free_area_init_nodes(max_zone_pfns);
 	zero_page_memmap_ptr = virt_to_page(ia64_imva(empty_zero_page));