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| author | Thomas Gleixner <tglx@linutronix.de> | 2007-10-17 18:04:40 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@inhelltoy.tec.linutronix.de> | 2007-10-17 20:16:50 +0200 |
| commit | c1e3619edd2b3e17450d745e27e335490cafd78d (patch) | |
| tree | 85d6af3369f529f863e24473430a9175a22feac7 /arch | |
| parent | c789c037e9d0d93d6081e796ab70b488b2ff69f2 (diff) | |
| download | linux-c1e3619edd2b3e17450d745e27e335490cafd78d.tar.gz linux-c1e3619edd2b3e17450d745e27e335490cafd78d.tar.bz2 linux-c1e3619edd2b3e17450d745e27e335490cafd78d.zip | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index dcf6bbb1c7c0..5f8af875f457 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 |