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authorThomas Gleixner <tglx@linutronix.de>2007-10-17 18:04:40 +0200
committerThomas Gleixner <tglx@inhelltoy.tec.linutronix.de>2007-10-17 20:16:50 +0200
commitc1e3619edd2b3e17450d745e27e335490cafd78d (patch)
tree85d6af3369f529f863e24473430a9175a22feac7
parentc789c037e9d0d93d6081e796ab70b488b2ff69f2 (diff)
x86: print info about late C1E detection on 32bit as well
Some BIOSes set the C1E flag only on the second core. Print a warning so the Firmware Toolkit can check for it. mingo: fix C1E build bug on 32-bit Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--arch/x86/kernel/cpu/amd.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index dcf6bbb1c7c..5f8af875f45 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -4,6 +4,7 @@
#include <asm/io.h>
#include <asm/processor.h>
#include <asm/apic.h>
+#include <asm/mach_apic.h>
#include "cpu.h"
@@ -45,13 +46,17 @@ static __cpuinit int amd_apic_timer_broken(void)
case CPUID_XFAM_10H:
case CPUID_XFAM_11H:
rdmsr(MSR_K8_ENABLE_C1E, lo, hi);
- if (lo & ENABLE_C1E_MASK)
+ if (lo & ENABLE_C1E_MASK) {
+ if (smp_processor_id() != boot_cpu_physical_apicid)
+ printk(KERN_INFO "AMD C1E detected late. "
+ " Force timer broadcast.\n");
return 1;
- break;
- default:
- /* err on the side of caution */
+ }
+ break;
+ default:
+ /* err on the side of caution */
return 1;
- }
+ }
return 0;
}
#endif