diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 943684566ebefcfba236f8ac64e7dff7f09afcf5..8c5ff24a492b49bee9ccda6c92dcd989337332d5 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -155,6 +155,8 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
 	if (*ax == 1)
 		maskedx = ~((1 << X86_FEATURE_APIC) |  /* disable APIC */
 			    (1 << X86_FEATURE_ACPI) |  /* disable ACPI */
+			    (1 << X86_FEATURE_MCE)  |  /* disable MCE */
+			    (1 << X86_FEATURE_MCA)  |  /* disable MCA */
 			    (1 << X86_FEATURE_ACC));   /* thermal monitoring */
 
 	asm(XEN_EMULATE_PREFIX "cpuid"