Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / sparc / power / hibernate.c

diff --git a/kernel/arch/sparc/power/hibernate.c b/kernel/arch/sparc/power/hibernate.c
new file mode 100644 (file)
index 0000000..17bd2e1
--- /dev/null
+++ b/kernel/arch/sparc/power/hibernate.c
@@ -0,0 +1,40 @@
+/*
+ * hibernate.c:  Hibernaton support specific for sparc64.
+ *
+ * Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru)
+ */
+
+#include <linux/mm.h>
+
+#include <asm/hibernate.h>
+#include <asm/visasm.h>
+#include <asm/page.h>
+#include <asm/sections.h>
+#include <asm/tlb.h>
+
+struct saved_context saved_context;
+
+/*
+ *     pfn_is_nosave - check if given pfn is in the 'nosave' section
+ */
+
+int pfn_is_nosave(unsigned long pfn)
+{
+       unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin);
+       unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end);
+
+       return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
+}
+
+void save_processor_state(void)
+{
+       save_and_clear_fpu();
+}
+
+void restore_processor_state(void)
+{
+       struct mm_struct *mm = current->active_mm;
+
+       load_secondary_context(mm);
+       tsb_context_switch(mm);
+}