diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 5181bf551f3c30edbf45d27d6ea3353fb0b43298..8e8f8b6193eea5038fb9bff9a53baa03b7694f7b 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -1113,7 +1113,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
 		if (md->num_pages == 0) /* should not happen */
 			continue;
 
-		flags = IORESOURCE_MEM;
+		flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 		switch (md->type) {
 
 			case EFI_MEMORY_MAPPED_IO:
@@ -1135,12 +1135,11 @@ efi_initialize_iomem_resources(struct resource *code_resource,
 
 			case EFI_ACPI_MEMORY_NVS:
 				name = "ACPI Non-volatile Storage";
-				flags |= IORESOURCE_BUSY;
 				break;
 
 			case EFI_UNUSABLE_MEMORY:
 				name = "reserved";
-				flags |= IORESOURCE_BUSY | IORESOURCE_DISABLED;
+				flags |= IORESOURCE_DISABLED;
 				break;
 
 			case EFI_RESERVED_TYPE:
@@ -1149,7 +1148,6 @@ efi_initialize_iomem_resources(struct resource *code_resource,
 			case EFI_ACPI_RECLAIM_MEMORY:
 			default:
 				name = "reserved";
-				flags |= IORESOURCE_BUSY;
 				break;
 		}
 
diff --git a/kernel/resource.c b/kernel/resource.c
index a358142ff48f34ca2dd0653f8bb1fc7c6f2c3fe0..2eb553d9b517153d8d938b34d60718b948b6bac0 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -277,7 +277,7 @@ walk_memory_resource(unsigned long start_pfn, unsigned long nr_pages, void *arg,
 	int ret = -1;
 	res.start = (u64) start_pfn << PAGE_SHIFT;
 	res.end = ((u64)(start_pfn + nr_pages) << PAGE_SHIFT) - 1;
-	res.flags = IORESOURCE_MEM;
+	res.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 	orig_end = res.end;
 	while ((res.start < res.end) && (find_next_system_ram(&res) >= 0)) {
 		pfn = (unsigned long)(res.start >> PAGE_SHIFT);
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 987abe6375ed0ca65ee9b31b45433d583ce9db0b..9512a544d0449ebcb789de665d9e8fc8ee0fdc8b 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -39,7 +39,7 @@ static struct resource *register_memory_resource(u64 start, u64 size)
 	res->name = "System RAM";
 	res->start = start;
 	res->end = start + size - 1;
-	res->flags = IORESOURCE_MEM;
+	res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
 	if (request_resource(&iomem_resource, res) < 0) {
 		printk("System RAM resource %llx - %llx cannot be added\n",
 		(unsigned long long)res->start, (unsigned long long)res->end);