hulk inclusion
category: bugfix
bugzilla: 5507
CVE: NA

----------------------------------------------

Override arch_klp_init_object_loaded() to perform additional
arch-specific tasks when a target module loads, such as applying
arch-specific sections. On arm64, we must apply per-object
.altinstructions sections when a target module loads.

These sections are prefixed with ".klp.arch.$objname.$secname",
so that they can be easily identified when iterating through
a patch module's Elf sections.

Fix next calltrace:
	livepatch: enabling patch 'livepatch_0001_test_per_cpu_cmdline'
	Unable to handle kernel paging request at virtual address ffff34dc4663e018
	pc : cmdline_proc_show+0x24/0xc40 [livepatch_0001_test_per_cpu_cmdline]
	lr : seq_read+0xd4/0x4a8
	sp : ffff0000d0a73c30
	Call trace:
	  cmdline_proc_show+0x24/0xc40 [livepatch_0001_test_per_cpu_cmdline]
	  seq_read+0xd4/0x4a8
	  proc_reg_read+0x80/0xd8
	  __vfs_read+0x60/0x188
	  vfs_read+0x94/0x150
	  ksys_read+0x74/0xf0
	  __arm64_sys_read+0x24/0x30
	  el0_svc_common+0xa0/0x180
	  el0_svc_handler+0x38/0x78
	  el0_svc+0x8/0xc
	  Code: d503201f f0274aa2 91006042 d538d083 (b8636842)
	---[ end trace 1256914246c5a0cf ]---

Testcase livepatch code:
	fs/proc/cmdline.c
	static int cmdline_proc_show(struct seq_file *m, void *v)
	{
	+	seq_printf(m, "[%d] ", raw_smp_processor_id());
		seq_puts(m, saved_command_line);
			seq_putc(m, '\n');
				return 0;
	}
Signed-off-by: NCheng Jian <cj.chengjian@huawei.com>
Reviewed-by: NBin Li <huawei.libin@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>