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/arm/include/asm/mmu.h b/kernel/arch/arm/include/asm/mmu.h
new file mode 100644
index 000000000..a5b474210
--- /dev/null
+++ b/kernel/arch/arm/include/asm/mmu.h
@@ -0,0 +1,40 @@
+#ifndef __ARM_MMU_H
+#define __ARM_MMU_H
+
+#ifdef CONFIG_MMU
+
+typedef struct {
+#ifdef CONFIG_CPU_HAS_ASID
+	atomic64_t	id;
+#else
+	int		switch_pending;
+#endif
+	unsigned int	vmalloc_seq;
+	unsigned long	sigpage;
+#ifdef CONFIG_VDSO
+	unsigned long	vdso;
+#endif
+} mm_context_t;
+
+#ifdef CONFIG_CPU_HAS_ASID
+#define ASID_BITS	8
+#define ASID_MASK	((~0ULL) << ASID_BITS)
+#define ASID(mm)	((unsigned int)((mm)->context.id.counter & ~ASID_MASK))
+#else
+#define ASID(mm)	(0)
+#endif
+
+#else
+
+/*
+ * From nommu.h:
+ *  Copyright (C) 2002, David McCullough <davidm@snapgear.com>
+ *  modified for 2.6 by Hyok S. Choi <hyok.choi@samsung.com>
+ */
+typedef struct {
+	unsigned long	end_brk;
+} mm_context_t;
+
+#endif
+
+#endif