1 files changed, 18 insertions, 32 deletions

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 7271fa33d79..d17d482a04f 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -115,7 +115,7 @@ static void __init __e820_add_region(struct e820map *e820x, u64 start, u64 size,
 {
 	int x = e820x->nr_map;
 
-	if (x == ARRAY_SIZE(e820x->map)) {
+	if (x >= ARRAY_SIZE(e820x->map)) {
 		printk(KERN_ERR "Ooops! Too many entries in the memory map!\n");
 		return;
 	}
@@ -627,10 +627,9 @@ __init void e820_setup_gap(void)
 #ifdef CONFIG_X86_64
 	if (!found) {
 		gapstart = (max_pfn << PAGE_SHIFT) + 1024*1024;
-		printk(KERN_ERR "PCI: Warning: Cannot find a gap in the 32bit "
-		       "address range\n"
-		       KERN_ERR "PCI: Unassigned devices with 32bit resource "
-		       "registers may break!\n");
+		printk(KERN_ERR
+	"PCI: Warning: Cannot find a gap in the 32bit address range\n"
+	"PCI: Unassigned devices with 32bit resource registers may break!\n");
 	}
 #endif
 
@@ -1332,7 +1331,7 @@ void __init e820_reserve_resources(void)
 	struct resource *res;
 	u64 end;
 
-	res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
+	res = alloc_bootmem(sizeof(struct resource) * e820.nr_map);
 	e820_res = res;
 	for (i = 0; i < e820.nr_map; i++) {
 		end = e820.map[i].addr + e820.map[i].size - 1;
@@ -1379,10 +1378,12 @@ static unsigned long ram_alignment(resource_size_t pos)
 	if (mb < 16)
 		return 1024*1024;
 
-	/* To 32MB for anything above that */
-	return 32*1024*1024;
+	/* To 64MB for anything above that */
+	return 64*1024*1024;
 }
 
+#define MAX_RESOURCE_SIZE ((resource_size_t)-1)
+
 void __init e820_reserve_resources_late(void)
 {
 	int i;
@@ -1400,17 +1401,19 @@ void __init e820_reserve_resources_late(void)
 	 * avoid stolen RAM:
 	 */
 	for (i = 0; i < e820.nr_map; i++) {
-		struct e820entry *entry = &e820_saved.map[i];
-		resource_size_t start, end;
+		struct e820entry *entry = &e820.map[i];
+		u64 start, end;
 
 		if (entry->type != E820_RAM)
 			continue;
 		start = entry->addr + entry->size;
-		end = round_up(start, ram_alignment(start));
-		if (start == end)
+		end = round_up(start, ram_alignment(start)) - 1;
+		if (end > MAX_RESOURCE_SIZE)
+			end = MAX_RESOURCE_SIZE;
+		if (start >= end)
 			continue;
-		reserve_region_with_split(&iomem_resource, start,
-						  end - 1, "RAM buffer");
+		reserve_region_with_split(&iomem_resource, start, end,
+					  "RAM buffer");
 	}
 }
 
@@ -1452,28 +1455,11 @@ char *__init default_machine_specific_memory_setup(void)
 	return who;
 }
 
-char *__init __attribute__((weak)) machine_specific_memory_setup(void)
-{
-	if (x86_quirks->arch_memory_setup) {
-		char *who = x86_quirks->arch_memory_setup();
-
-		if (who)
-			return who;
-	}
-	return default_machine_specific_memory_setup();
-}
-
-/* Overridden in paravirt.c if CONFIG_PARAVIRT */
-char * __init __attribute__((weak)) memory_setup(void)
-{
-	return machine_specific_memory_setup();
-}
-
 void __init setup_memory_map(void)
 {
 	char *who;
 
-	who = memory_setup();
+	who = x86_init.resources.memory_setup();
 	memcpy(&e820_saved, &e820, sizeof(struct e820map));
 	printk(KERN_INFO "BIOS-provided physical RAM map:\n");
 	e820_print_map(who);