1 files changed, 16 insertions, 6 deletions

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 953b3ce92dcc..8cb3c02980cf 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -270,7 +270,7 @@ static void print_mce(struct mce *m)
 {
 	__print_mce(m);
 
-	if (m->cpuvendor != X86_VENDOR_AMD)
+	if (m->cpuvendor != X86_VENDOR_AMD && m->cpuvendor != X86_VENDOR_HYGON)
 		pr_emerg_ratelimited(HW_ERR "Run the above through 'mcelog --ascii'\n");
 }
 
@@ -508,9 +508,9 @@ static int mce_usable_address(struct mce *m)
 
 bool mce_is_memory_error(struct mce *m)
 {
-	if (m->cpuvendor == X86_VENDOR_AMD) {
+	if (m->cpuvendor == X86_VENDOR_AMD ||
+	    m->cpuvendor == X86_VENDOR_HYGON) {
 		return amd_mce_is_memory_error(m);
-
 	} else if (m->cpuvendor == X86_VENDOR_INTEL) {
 		/*
 		 * Intel SDM Volume 3B - 15.9.2 Compound Error Codes
@@ -539,6 +539,9 @@ static bool mce_is_correctable(struct mce *m)
 	if (m->cpuvendor == X86_VENDOR_AMD && m->status & MCI_STATUS_DEFERRED)
 		return false;
 
+	if (m->cpuvendor == X86_VENDOR_HYGON && m->status & MCI_STATUS_DEFERRED)
+		return false;
+
 	if (m->status & MCI_STATUS_UC)
 		return false;
 
@@ -1315,7 +1318,7 @@ void do_machine_check(struct pt_regs *regs, long error_code)
 		local_irq_disable();
 		ist_end_non_atomic();
 	} else {
-		if (!fixup_exception(regs, X86_TRAP_MC))
+		if (!fixup_exception(regs, X86_TRAP_MC, error_code, 0))
 			mce_panic("Failed kernel mode recovery", &m, NULL);
 	}
 
@@ -1705,7 +1708,7 @@ static int __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
  */
 static void __mcheck_cpu_init_early(struct cpuinfo_x86 *c)
 {
-	if (c->x86_vendor == X86_VENDOR_AMD) {
+	if (c->x86_vendor == X86_VENDOR_AMD || c->x86_vendor == X86_VENDOR_HYGON) {
 		mce_flags.overflow_recov = !!cpu_has(c, X86_FEATURE_OVERFLOW_RECOV);
 		mce_flags.succor	 = !!cpu_has(c, X86_FEATURE_SUCCOR);
 		mce_flags.smca		 = !!cpu_has(c, X86_FEATURE_SMCA);
@@ -1746,6 +1749,11 @@ static void __mcheck_cpu_init_vendor(struct cpuinfo_x86 *c)
 		mce_amd_feature_init(c);
 		break;
 		}
+
+	case X86_VENDOR_HYGON:
+		mce_hygon_feature_init(c);
+		break;
+
 	case X86_VENDOR_CENTAUR:
 		mce_centaur_feature_init(c);
 		break;
@@ -1971,12 +1979,14 @@ static void mce_disable_error_reporting(void)
 static void vendor_disable_error_reporting(void)
 {
 	/*
-	 * Don't clear on Intel or AMD CPUs. Some of these MSRs are socket-wide.
+	 * Don't clear on Intel or AMD or Hygon CPUs. Some of these MSRs
+	 * are socket-wide.
 	 * Disabling them for just a single offlined CPU is bad, since it will
 	 * inhibit reporting for all shared resources on the socket like the
 	 * last level cache (LLC), the integrated memory controller (iMC), etc.
 	 */
 	if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL ||
+	    boot_cpu_data.x86_vendor == X86_VENDOR_HYGON ||
 	    boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
 		return;