diff -up ./drivers/acpi/apei/hest.c.w64 ./drivers/acpi/apei/hest.c
--- ./drivers/acpi/apei/hest.c.w64	2017-02-07 02:27:30.000000000 +0900
+++ ./drivers/acpi/apei/hest.c	2017-02-07 02:29:12.000000000 +0900
@@ -128,9 +128,11 @@ EXPORT_SYMBOL_GPL(apei_hest_parse);
  */
 static int __init hest_parse_cmc(struct acpi_hest_header *hest_hdr, void *data)
 {
-	int i;
 	struct acpi_hest_ia_corrected *cmc;
+#ifdef CONFIG_X86_MCE
 	struct acpi_hest_ia_error_bank *mc_bank;
+	int i;
+#endif
 
 	if (hest_hdr->type != ACPI_HEST_TYPE_IA32_CORRECTED_CHECK)
 		return 0;
@@ -147,11 +149,13 @@ static int __init hest_parse_cmc(struct
 	if (!(cmc->flags & ACPI_HEST_FIRMWARE_FIRST) || !cmc->num_hardware_banks)
 		return 1;
 
+#ifdef CONFIG_X86_MCE
 	pr_info(HEST_PFX "Enabling Firmware First mode for corrected errors.\n");
 
 	mc_bank = (struct acpi_hest_ia_error_bank *)(cmc + 1);
 	for (i = 0; i < cmc->num_hardware_banks; i++, mc_bank++)
 		mce_disable_bank(mc_bank->bank_number);
+#endif
 
 	return 1;
 }