add arm64 support

- add arm64 dependent codes with GICv3 and SVE support
- fix bugs based on architecture separation requests

arch/arm64/kernel/local.c

@@ -0,0 +1,87 @@
+/* local.c COPYRIGHT FUJITSU LIMITED 2015-2016 */
+#include <cpulocal.h>
+#include <ihk/atomic.h>
+#include <ihk/mm.h>
+#include <ihk/cpu.h>
+#include <ihk/debug.h>
+#include <registers.h>
+#include <string.h>
+
+#define LOCALS_SPAN (8 * PAGE_SIZE)
+
+/* BSP initialized stack area */
+union arm64_cpu_local_variables init_thread_info __attribute__((aligned(KERNEL_STACK_SIZE)));
+
+/* BSP/AP idle stack pointer head */
+static union arm64_cpu_local_variables *locals;
+size_t arm64_cpu_local_variables_span = LOCALS_SPAN;	/* for debugger */
+
+/* allocate & initialize BSP/AP idle stack */
+void init_processors_local(int max_id)
+{
+	int i = 0;
+	union arm64_cpu_local_variables *tmp;
+
+	/* allocate one more for alignment */
+	locals = ihk_mc_alloc_pages((max_id + 1) * (KERNEL_STACK_SIZE / PAGE_SIZE), IHK_MC_AP_CRITICAL);
+	locals = (union arm64_cpu_local_variables *)ALIGN_UP((unsigned long)locals, KERNEL_STACK_SIZE);
+
+	/* clear struct process, struct process_vm, struct thread_info area */
+	for (i = 0, tmp = locals; i < max_id; i++, tmp++) {
+		memset(tmp, 0, sizeof(struct thread_info));
+	}
+	kprintf("locals = %p\n", locals);
+}
+
+/* get id (logical processor id) local variable address */
+union arm64_cpu_local_variables *get_arm64_cpu_local_variable(int id)
+{
+	return locals + id;
+}
+
+/* get id (logical processor id) kernel stack address */
+static void *get_arm64_cpu_local_kstack(int id)
+{
+	return (char *)get_arm64_cpu_local_variable(id) + THREAD_START_SP;
+}
+
+/* get current cpu local variable address */
+union arm64_cpu_local_variables *get_arm64_this_cpu_local(void)
+{
+	int id = ihk_mc_get_processor_id();
+	return get_arm64_cpu_local_variable(id);
+}
+
+/* get current kernel stack address */
+void *get_arm64_this_cpu_kstack(void)
+{
+	int id = ihk_mc_get_processor_id();
+	return get_arm64_cpu_local_kstack(id);
+}
+
+/* assign logical processor id for current_thread_info.cpu */
+/* logical processor id BSP:0, AP0:1, AP1:2, ... APn:n-1 */
+static ihk_atomic_t last_processor_id = IHK_ATOMIC_INIT(-1);
+void assign_processor_id(void)
+{
+	int id;
+	union arm64_cpu_local_variables *v;
+
+	id = ihk_atomic_inc_return(&last_processor_id);
+
+	v = get_arm64_cpu_local_variable(id);
+	v->arm64_cpu_local_thread.thread_info.cpu = id;
+}
+
+/** IHK **/
+/* get current logical processor id */
+int ihk_mc_get_processor_id(void)
+{
+	return current_thread_info()->cpu;
+}
+
+/* get current physical processor id (not equal AFFINITY !!) */
+int ihk_mc_get_hardware_processor_id(void)
+{
+	return ihk_mc_get_cpu_info()->hw_ids[ihk_mc_get_processor_id()];
+}