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, 46 insertions, 0 deletions

diff --git a/kernel/arch/x86/include/asm/page_64.h b/kernel/arch/x86/include/asm/page_64.h
new file mode 100644
index 000000000..b3bebf9e5
--- /dev/null
+++ b/kernel/arch/x86/include/asm/page_64.h
@@ -0,0 +1,46 @@
+#ifndef _ASM_X86_PAGE_64_H
+#define _ASM_X86_PAGE_64_H
+
+#include <asm/page_64_types.h>
+
+#ifndef __ASSEMBLY__
+
+/* duplicated to the one in bootmem.h */
+extern unsigned long max_pfn;
+extern unsigned long phys_base;
+
+static inline unsigned long __phys_addr_nodebug(unsigned long x)
+{
+	unsigned long y = x - __START_KERNEL_map;
+
+	/* use the carry flag to determine if x was < __START_KERNEL_map */
+	x = y + ((x > y) ? phys_base : (__START_KERNEL_map - PAGE_OFFSET));
+
+	return x;
+}
+
+#ifdef CONFIG_DEBUG_VIRTUAL
+extern unsigned long __phys_addr(unsigned long);
+extern unsigned long __phys_addr_symbol(unsigned long);
+#else
+#define __phys_addr(x)		__phys_addr_nodebug(x)
+#define __phys_addr_symbol(x) \
+	((unsigned long)(x) - __START_KERNEL_map + phys_base)
+#endif
+
+#define __phys_reloc_hide(x)	(x)
+
+#ifdef CONFIG_FLATMEM
+#define pfn_valid(pfn)          ((pfn) < max_pfn)
+#endif
+
+void clear_page(void *page);
+void copy_page(void *to, void *from);
+
+#endif	/* !__ASSEMBLY__ */
+
+#ifdef CONFIG_X86_VSYSCALL_EMULATION
+# define __HAVE_ARCH_GATE_AREA 1
+#endif
+
+#endif /* _ASM_X86_PAGE_64_H */