diff --git a/arch/i386/kernel/mpparse.c b/arch/i386/kernel/mpparse.c
index 8f767d9..1ca5269b1 100644
--- a/arch/i386/kernel/mpparse.c
+++ b/arch/i386/kernel/mpparse.c
@@ -220,8 +220,9 @@
 	num_processors++;
 
 	if ((num_processors > 8) &&
-	    APIC_XAPIC(ver) &&
-	    (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL))
+	    ((APIC_XAPIC(ver) &&
+	     (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL)) ||
+	     (boot_cpu_data.x86_vendor == X86_VENDOR_AMD)))
 		def_to_bigsmp = 1;
 	else
 		def_to_bigsmp = 0;