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, 145 insertions, 0 deletions

diff --git a/kernel/arch/x86/xen/xen-ops.h b/kernel/arch/x86/xen/xen-ops.h
new file mode 100644
index 000000000..9e195c683
--- /dev/null
+++ b/kernel/arch/x86/xen/xen-ops.h
@@ -0,0 +1,145 @@
+#ifndef XEN_OPS_H
+#define XEN_OPS_H
+
+#include <linux/init.h>
+#include <linux/clocksource.h>
+#include <linux/irqreturn.h>
+#include <xen/xen-ops.h>
+
+/* These are code, but not functions.  Defined in entry.S */
+extern const char xen_hypervisor_callback[];
+extern const char xen_failsafe_callback[];
+
+void xen_sysenter_target(void);
+#ifdef CONFIG_X86_64
+void xen_syscall_target(void);
+void xen_syscall32_target(void);
+#endif
+
+extern void *xen_initial_gdt;
+
+struct trap_info;
+void xen_copy_trap_info(struct trap_info *traps);
+
+DECLARE_PER_CPU(struct vcpu_info, xen_vcpu_info);
+DECLARE_PER_CPU(unsigned long, xen_cr3);
+DECLARE_PER_CPU(unsigned long, xen_current_cr3);
+
+extern struct start_info *xen_start_info;
+extern struct shared_info xen_dummy_shared_info;
+extern struct shared_info *HYPERVISOR_shared_info;
+
+void xen_setup_mfn_list_list(void);
+void xen_setup_shared_info(void);
+void xen_build_mfn_list_list(void);
+void xen_setup_machphys_mapping(void);
+void xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn);
+void xen_reserve_top(void);
+
+void xen_mm_pin_all(void);
+void xen_mm_unpin_all(void);
+
+unsigned long __ref xen_chk_extra_mem(unsigned long pfn);
+void __init xen_inv_extra_mem(void);
+void __init xen_remap_memory(void);
+char * __init xen_memory_setup(void);
+char * xen_auto_xlated_memory_setup(void);
+void __init xen_arch_setup(void);
+void xen_enable_sysenter(void);
+void xen_enable_syscall(void);
+void xen_vcpu_restore(void);
+
+void xen_callback_vector(void);
+void xen_hvm_init_shared_info(void);
+void xen_unplug_emulated_devices(void);
+
+void __init xen_build_dynamic_phys_to_machine(void);
+void __init xen_vmalloc_p2m_tree(void);
+
+void xen_init_irq_ops(void);
+void xen_setup_timer(int cpu);
+void xen_setup_runstate_info(int cpu);
+void xen_teardown_timer(int cpu);
+cycle_t xen_clocksource_read(void);
+void xen_setup_cpu_clockevents(void);
+void __init xen_init_time_ops(void);
+void __init xen_hvm_init_time_ops(void);
+
+irqreturn_t xen_debug_interrupt(int irq, void *dev_id);
+
+bool xen_vcpu_stolen(int vcpu);
+
+void xen_setup_vcpu_info_placement(void);
+
+#ifdef CONFIG_SMP
+void xen_smp_init(void);
+void __init xen_hvm_smp_init(void);
+
+extern cpumask_var_t xen_cpu_initialized_map;
+#else
+static inline void xen_smp_init(void) {}
+static inline void xen_hvm_smp_init(void) {}
+#endif
+
+#ifdef CONFIG_PARAVIRT_SPINLOCKS
+void __init xen_init_spinlocks(void);
+void xen_init_lock_cpu(int cpu);
+void xen_uninit_lock_cpu(int cpu);
+#else
+static inline void xen_init_spinlocks(void)
+{
+}
+static inline void xen_init_lock_cpu(int cpu)
+{
+}
+static inline void xen_uninit_lock_cpu(int cpu)
+{
+}
+#endif
+
+struct dom0_vga_console_info;
+
+#ifdef CONFIG_XEN_DOM0
+void __init xen_init_vga(const struct dom0_vga_console_info *, size_t size);
+void __init xen_init_apic(void);
+#else
+static inline void __init xen_init_vga(const struct dom0_vga_console_info *info,
+				       size_t size)
+{
+}
+static inline void __init xen_init_apic(void)
+{
+}
+#endif
+
+#ifdef CONFIG_XEN_EFI
+extern void xen_efi_init(void);
+#else
+static inline void __init xen_efi_init(void)
+{
+}
+#endif
+
+/* Declare an asm function, along with symbols needed to make it
+   inlineable */
+#define DECL_ASM(ret, name, ...)		\
+	__visible ret name(__VA_ARGS__);	\
+	extern char name##_end[] __visible;	\
+	extern char name##_reloc[] __visible
+
+DECL_ASM(void, xen_irq_enable_direct, void);
+DECL_ASM(void, xen_irq_disable_direct, void);
+DECL_ASM(unsigned long, xen_save_fl_direct, void);
+DECL_ASM(void, xen_restore_fl_direct, unsigned long);
+
+/* These are not functions, and cannot be called normally */
+__visible void xen_iret(void);
+__visible void xen_sysexit(void);
+__visible void xen_sysret32(void);
+__visible void xen_sysret64(void);
+__visible void xen_adjust_exception_frame(void);
+
+extern int xen_panic_handler_init(void);
+
+void xen_pvh_secondary_vcpu_init(int cpu);
+#endif /* XEN_OPS_H */