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, 70 insertions, 0 deletions

diff --git a/kernel/arch/sh/include/asm/kexec.h b/kernel/arch/sh/include/asm/kexec.h
new file mode 100644
index 000000000..ad6ef8a27
--- /dev/null
+++ b/kernel/arch/sh/include/asm/kexec.h
@@ -0,0 +1,70 @@
+#ifndef __ASM_SH_KEXEC_H
+#define __ASM_SH_KEXEC_H
+
+#include <asm/ptrace.h>
+#include <asm/string.h>
+
+/*
+ * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return.
+ * I.e. Maximum page that is mapped directly into kernel memory,
+ * and kmap is not required.
+ *
+ * Someone correct me if FIXADDR_START - PAGEOFFSET is not the correct
+ * calculation for the amount of memory directly mappable into the
+ * kernel memory space.
+ */
+
+/* Maximum physical address we can use pages from */
+#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL)
+/* Maximum address we can reach in physical address mode */
+#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL)
+/* Maximum address we can use for the control code buffer */
+#define KEXEC_CONTROL_MEMORY_LIMIT TASK_SIZE
+
+#define KEXEC_CONTROL_PAGE_SIZE	4096
+
+/* The native architecture */
+#define KEXEC_ARCH KEXEC_ARCH_SH
+
+#ifdef CONFIG_KEXEC
+/* arch/sh/kernel/machine_kexec.c */
+void reserve_crashkernel(void);
+
+static inline void crash_setup_regs(struct pt_regs *newregs,
+				    struct pt_regs *oldregs)
+{
+	if (oldregs)
+		memcpy(newregs, oldregs, sizeof(*newregs));
+	else {
+		__asm__ __volatile__ ("mov r0, %0" : "=r" (newregs->regs[0]));
+		__asm__ __volatile__ ("mov r1, %0" : "=r" (newregs->regs[1]));
+		__asm__ __volatile__ ("mov r2, %0" : "=r" (newregs->regs[2]));
+		__asm__ __volatile__ ("mov r3, %0" : "=r" (newregs->regs[3]));
+		__asm__ __volatile__ ("mov r4, %0" : "=r" (newregs->regs[4]));
+		__asm__ __volatile__ ("mov r5, %0" : "=r" (newregs->regs[5]));
+		__asm__ __volatile__ ("mov r6, %0" : "=r" (newregs->regs[6]));
+		__asm__ __volatile__ ("mov r7, %0" : "=r" (newregs->regs[7]));
+		__asm__ __volatile__ ("mov r8, %0" : "=r" (newregs->regs[8]));
+		__asm__ __volatile__ ("mov r9, %0" : "=r" (newregs->regs[9]));
+		__asm__ __volatile__ ("mov r10, %0" : "=r" (newregs->regs[10]));
+		__asm__ __volatile__ ("mov r11, %0" : "=r" (newregs->regs[11]));
+		__asm__ __volatile__ ("mov r12, %0" : "=r" (newregs->regs[12]));
+		__asm__ __volatile__ ("mov r13, %0" : "=r" (newregs->regs[13]));
+		__asm__ __volatile__ ("mov r14, %0" : "=r" (newregs->regs[14]));
+		__asm__ __volatile__ ("mov r15, %0" : "=r" (newregs->regs[15]));
+
+		__asm__ __volatile__ ("sts pr, %0" : "=r" (newregs->pr));
+		__asm__ __volatile__ ("sts macl, %0" : "=r" (newregs->macl));
+		__asm__ __volatile__ ("sts mach, %0" : "=r" (newregs->mach));
+
+		__asm__ __volatile__ ("stc gbr, %0" : "=r" (newregs->gbr));
+		__asm__ __volatile__ ("stc sr, %0" : "=r" (newregs->sr));
+
+		newregs->pc = (unsigned long)current_text_addr();
+	}
+}
+#else
+static inline void reserve_crashkernel(void) { }
+#endif /* CONFIG_KEXEC */
+
+#endif /* __ASM_SH_KEXEC_H */