Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 40 insertions, 0 deletions

diff --git a/kernel/arch/sparc/power/hibernate.c b/kernel/arch/sparc/power/hibernate.c
new file mode 100644
index 000000000..17bd2e167
--- /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);
+}