diff --git a/[refs] b/[refs]
index 68dc14641ca4..6371ccc416a7 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 64e474d168e3cf31e44890b4947644d361f84e43
+refs/heads/master: c93baa1ae51cdba25a5f5ad37b2348e700e75daf
diff --git a/trunk/arch/x86/kernel/apic_32.c b/trunk/arch/x86/kernel/apic_32.c
index 7783c113be24..7ef7c782a42d 100644
--- a/trunk/arch/x86/kernel/apic_32.c
+++ b/trunk/arch/x86/kernel/apic_32.c
@@ -878,6 +878,12 @@ int __init verify_local_APIC(void)
 	 */
 	reg0 = apic_read(APIC_ID);
 	apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg0);
+	apic_write(APIC_ID, reg0 ^ APIC_ID_MASK);
+	reg1 = apic_read(APIC_ID);
+	apic_printk(APIC_DEBUG, "Getting ID: %x\n", reg1);
+	apic_write(APIC_ID, reg0);
+	if (reg1 != (reg0 ^ APIC_ID_MASK))
+		return 0;
 
 	/*
 	 * The next two are just to see if we have sane values.