Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <linux/device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <linux/cpu.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <asm/facility.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <asm/nospec-branch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) ssize_t cpu_show_spectre_v1(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 			    struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	return sprintf(buf, "Mitigation: __user pointer sanitization\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) ssize_t cpu_show_spectre_v2(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 			    struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	if (test_facility(156))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 		return sprintf(buf, "Mitigation: etokens\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	if (__is_defined(CC_USING_EXPOLINE) && !nospec_disable)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 		return sprintf(buf, "Mitigation: execute trampolines\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	if (__test_facility(82, S390_lowcore.alt_stfle_fac_list))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 		return sprintf(buf, "Mitigation: limited branch prediction\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	return sprintf(buf, "Vulnerable\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) }