Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (50 commits)
  x86, mm: Allow ZONE_DMA to be configurable
  x86, NUMA: Trim numa meminfo with max_pfn in a separate loop
  x86, NUMA: Rename setup_node_bootmem() to setup_node_data()
  x86, NUMA: Enable emulation on 32bit too
  x86, NUMA: Enable CONFIG_AMD_NUMA on 32bit too
  x86, NUMA: Rename amdtopology_64.c to amdtopology.c
  x86, NUMA: Make numa_init_array() static
  x86, NUMA: Make 32bit use common NUMA init path
  x86, NUMA: Initialize and use remap allocator from setup_node_bootmem()
  x86-32, NUMA: Add @start and @end to init_alloc_remap()
  x86, NUMA: Remove long 64bit assumption from numa.c
  x86, NUMA: Enable build of generic NUMA init code on 32bit
  x86, NUMA: Move NUMA init logic from numa_64.c to numa.c
  x86-32, NUMA: Update numaq to use new NUMA init protocol
  x86-32, NUMA: Replace srat_32.c with srat.c
  x86-32, NUMA: implement temporary NUMA init shims
  x86, NUMA: Move numa_nodes_parsed to numa.[hc]
  x86-32, NUMA: Move get_memcfg_numa() into numa_32.c
  x86, NUMA: make srat.c 32bit safe
  x86, NUMA: rename srat_64.c to srat.c
  ...

1 files changed, 11 insertions, 5 deletions

diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c
index de84cc14037..d0ed086b624 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -5,6 +5,7 @@
 #include <linux/errno.h>
 #include <linux/topology.h>
 #include <linux/memblock.h>
+#include <linux/bootmem.h>
 #include <asm/dma.h>
 
 #include "numa_internal.h"
@@ -84,7 +85,13 @@ static int __init split_nodes_interleave(struct numa_meminfo *ei,
 		nr_nodes = MAX_NUMNODES;
 	}
 
-	size = (max_addr - addr - memblock_x86_hole_size(addr, max_addr)) / nr_nodes;
+	/*
+	 * Calculate target node size.  x86_32 freaks on __udivdi3() so do
+	 * the division in ulong number of pages and convert back.
+	 */
+	size = max_addr - addr - memblock_x86_hole_size(addr, max_addr);
+	size = PFN_PHYS((unsigned long)(size >> PAGE_SHIFT) / nr_nodes);
+
 	/*
 	 * Calculate the number of big nodes that can be allocated as a result
 	 * of consolidating the remainder.
@@ -226,7 +233,7 @@ static int __init split_nodes_size_interleave(struct numa_meminfo *ei,
 	 */
 	while (nodes_weight(physnode_mask)) {
 		for_each_node_mask(i, physnode_mask) {
-			u64 dma32_end = MAX_DMA32_PFN << PAGE_SHIFT;
+			u64 dma32_end = PFN_PHYS(MAX_DMA32_PFN);
 			u64 start, limit, end;
 			int phys_blk;
 
@@ -298,7 +305,7 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
 {
 	static struct numa_meminfo ei __initdata;
 	static struct numa_meminfo pi __initdata;
-	const u64 max_addr = max_pfn << PAGE_SHIFT;
+	const u64 max_addr = PFN_PHYS(max_pfn);
 	u8 *phys_dist = NULL;
 	size_t phys_size = numa_dist_cnt * numa_dist_cnt * sizeof(phys_dist[0]);
 	int max_emu_nid, dfl_phys_nid;
@@ -342,8 +349,7 @@ void __init numa_emulation(struct numa_meminfo *numa_meminfo, int numa_dist_cnt)
 	if (numa_dist_cnt) {
 		u64 phys;
 
-		phys = memblock_find_in_range(0,
-					      (u64)max_pfn_mapped << PAGE_SHIFT,
+		phys = memblock_find_in_range(0, PFN_PHYS(max_pfn_mapped),
 					      phys_size, PAGE_SIZE);
 		if (phys == MEMBLOCK_ERROR) {
 			pr_warning("NUMA: Warning: can't allocate copy of distance table, disabling emulation\n");