arm64: Scalable Vector Extension (SVE) support.

Change-Id: I3568687913f583edfaa297d5cf5ac91d319d97e9

kernel/gencore.c

@@ -183,8 +183,8 @@ void fill_auxv(struct note *head, struct thread *thread, void *regs)
 
 int get_note_size(void)
 {
-	return get_prstatus_size() + get_prpsinfo_size()
-		+ get_auxv_size();
+	return get_prstatus_size() + arch_get_thread_core_info_size()
+		+ get_prpsinfo_size() + get_auxv_size();
 }
 
 /**
@@ -199,8 +199,13 @@ void fill_note(void *note, struct thread *thread, void *regs)
 {
 	fill_prstatus(note, thread, regs);
 	note += get_prstatus_size();
+
+	arch_fill_thread_core_info(note, thread, regs);
+	note += arch_get_thread_core_info_size();
+
 	fill_prpsinfo(note, thread, regs);
 	note += get_prpsinfo_size();
+
 	fill_auxv(note, thread, regs);
 }
 

kernel/include/elfcore.h

@@ -1,4 +1,4 @@
-/* elfcore.h COPYRIGHT FUJITSU LIMITED 2015-2016 */
+/* elfcore.h COPYRIGHT FUJITSU LIMITED 2015-2019 */
 #ifndef __HEADER_ELFCORE_H
 #define __HEADER_ELFCORE_H
 
@@ -109,5 +109,8 @@ struct note {
 /* functions */
 struct thread;
 extern void arch_fill_prstatus(struct elf_prstatus64 *prstatus, struct thread *thread, void *regs0);
+extern int arch_get_thread_core_info_size(void);
+extern void arch_fill_thread_core_info(struct note *head,
+		struct thread *thread, void *regs);
 
 #endif /* __HEADER_ELFCORE_H */