diff --git a/[refs] b/[refs]
index 4db13aa60d17..7f1158867722 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e6459606b04e6385ccd3c2060fc10f78a92c7700
+refs/heads/master: 8e30524dcc0d0ac1a18a5cee482b9d9cde3cb332
diff --git a/trunk/arch/x86/kernel/acpi/boot.c b/trunk/arch/x86/kernel/acpi/boot.c
index b2297e58c6ed..6b75777c0a8d 100644
--- a/trunk/arch/x86/kernel/acpi/boot.c
+++ b/trunk/arch/x86/kernel/acpi/boot.c
@@ -1700,3 +1700,9 @@ int __acpi_release_global_lock(unsigned int *lock)
 	} while (unlikely (val != old));
 	return old & 0x1;
 }
+
+void __init arch_reserve_mem_area(acpi_physical_address addr, size_t size)
+{
+	e820_add_region(addr, size, E820_ACPI);
+	update_e820();
+}
diff --git a/trunk/include/linux/acpi.h b/trunk/include/linux/acpi.h
index 4f2a76224509..946fd1ea79ff 100644
--- a/trunk/include/linux/acpi.h
+++ b/trunk/include/linux/acpi.h
@@ -426,6 +426,14 @@ void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state,
 
 acpi_status acpi_os_prepare_sleep(u8 sleep_state,
 				  u32 pm1a_control, u32 pm1b_control);
+#if CONFIG_X86
+void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
+#else
+static inline void arch_reserve_mem_area(acpi_physical_address addr,
+					  size_t size)
+{
+}
+#endif /* CONFIG_X86 */
 #else
 #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
 #endif