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-rw-r--r--arch/x86_64/kernel/setup.c34
1 files changed, 0 insertions, 34 deletions
diff --git a/arch/x86_64/kernel/setup.c b/arch/x86_64/kernel/setup.c
index 32054bf5ba40..af838f6b0b7f 100644
--- a/arch/x86_64/kernel/setup.c
+++ b/arch/x86_64/kernel/setup.c
@@ -546,37 +546,6 @@ static void __init amd_detect_cmp(struct cpuinfo_x86 *c)
546#endif 546#endif
547} 547}
548 548
549#define ENABLE_C1E_MASK 0x18000000
550#define CPUID_PROCESSOR_SIGNATURE 1
551#define CPUID_XFAM 0x0ff00000
552#define CPUID_XFAM_K8 0x00000000
553#define CPUID_XFAM_10H 0x00100000
554#define CPUID_XFAM_11H 0x00200000
555#define CPUID_XMOD 0x000f0000
556#define CPUID_XMOD_REV_F 0x00040000
557
558/* AMD systems with C1E don't have a working lAPIC timer. Check for that. */
559static __cpuinit int amd_apic_timer_broken(void)
560{
561 u32 lo, hi;
562 u32 eax = cpuid_eax(CPUID_PROCESSOR_SIGNATURE);
563 switch (eax & CPUID_XFAM) {
564 case CPUID_XFAM_K8:
565 if ((eax & CPUID_XMOD) < CPUID_XMOD_REV_F)
566 break;
567 case CPUID_XFAM_10H:
568 case CPUID_XFAM_11H:
569 rdmsr(MSR_K8_ENABLE_C1E, lo, hi);
570 if (lo & ENABLE_C1E_MASK)
571 return 1;
572 break;
573 default:
574 /* err on the side of caution */
575 return 1;
576 }
577 return 0;
578}
579
580static void __cpuinit init_amd(struct cpuinfo_x86 *c) 549static void __cpuinit init_amd(struct cpuinfo_x86 *c)
581{ 550{
582 unsigned level; 551 unsigned level;
@@ -648,9 +617,6 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
648 /* Family 10 doesn't support C states in MWAIT so don't use it */ 617 /* Family 10 doesn't support C states in MWAIT so don't use it */
649 if (c->x86 == 0x10 && !force_mwait) 618 if (c->x86 == 0x10 && !force_mwait)
650 clear_bit(X86_FEATURE_MWAIT, &c->x86_capability); 619 clear_bit(X86_FEATURE_MWAIT, &c->x86_capability);
651
652 if (amd_apic_timer_broken())
653 disable_apic_timer = 1;
654} 620}
655 621
656static void __cpuinit detect_ht(struct cpuinfo_x86 *c) 622static void __cpuinit detect_ht(struct cpuinfo_x86 *c)