On APs the ClLinesToNbDis was being left enabled from CAR setup.

Disabling it should help performance.

Signed-off-by: Marc Jones <marc.jones@amd.com>
Acked-by: Peter Stuge <peter@stuge.se>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3262 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

src/cpu/amd/model_10xxx/init_cpus.c

@@ -295,6 +295,13 @@ static void enable_apic_ext_id(u32 node)
 
 static void STOP_CAR_AND_CPU()
 {
+	msr_t msr;
+
+	/* Disable L2 IC to L3 connection (Only for CAR) */
+	msr = rdmsr(BU_CFG2);
+	msr.lo &= ~(1 << ClLinesToNbDis);
+	wrmsr(BU_CFG2, msr);
+
 	disable_cache_as_ram(); // inline
 	stop_this_cpu();
 }