1 files changed, 8 insertions, 1 deletions
diff --git a/xen/arch/x86/cpu/mcheck/mce.c b/xen/arch/x86/cpu/mcheck/mce.c
index 1842e5244d..7704bba557 100644
--- a/xen/arch/x86/cpu/mcheck/mce.c
+++ b/xen/arch/x86/cpu/mcheck/mce.c
@@ -734,7 +734,14 @@ int mca_cap_init(void)
     }
     nr_mce_banks = msr_content & MCG_CAP_COUNT;
 
-    /* mcabanks_alloc depends on nr_mcebanks */
+    if (!nr_mce_banks)
+    {
+        printk(XENLOG_INFO "CPU%u: No MCE banks present. "
+               "Machine check support disabled\n", smp_processor_id());
+        return -ENODEV;
+    }
+
+    /* mcabanks_alloc depends on nr_mce_banks */
     if (!mca_allbanks)
     {
         int i;