1 files changed, 23 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/suspend.c b/arch/powerpc/kernel/suspend.c
new file mode 100644
index 000000000..b84992c10
--- /dev/null
+++ b/arch/powerpc/kernel/suspend.c
@@ -0,0 +1,23 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Suspend support specific for power.
+ *
+ * Copyright (c) 2002 Pavel Machek <pavel@ucw.cz>
+ * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org>
+ */
+
+#include <linux/mm.h>
+#include <linux/suspend.h>
+#include <asm/page.h>
+#include <asm/sections.h>
+
+/*
+ *	pfn_is_nosave - check if given pfn is in the 'nosave' section
+ */
+
+int pfn_is_nosave(unsigned long pfn)
+{
+	unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT;
+	unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT;
+	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
+}