From d3f7eae182b04997be19343a23f7009170f4f7a5 Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 10 Aug 2007 22:31:07 +0200 Subject: i386: Use global flag to disable broken local apic timer on AMD CPUs. The Averatec 2370 and some other Turion laptop BIOS seems to program the ENABLE_C1E MSR inconsistently between cores. This confuses the lapic use heuristics because when C1E is enabled anywhere it seems to affect the complete chip. Use a global flag instead of a per cpu flag to handle this. If any CPU has C1E enabled disabled lapic use. Thanks to Cal Peake for debugging. Cc: tglx@linutronix.de Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- include/asm-i386/apic.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/asm-i386/apic.h') diff --git a/include/asm-i386/apic.h b/include/asm-i386/apic.h index 1e8f6f2..4091b33 100644 --- a/include/asm-i386/apic.h +++ b/include/asm-i386/apic.h @@ -116,6 +116,8 @@ extern void enable_NMI_through_LVT0 (void * dummy); extern int timer_over_8254; extern int local_apic_timer_c2_ok; +extern int local_apic_timer_disabled; + #else /* !CONFIG_X86_LOCAL_APIC */ static inline void lapic_shutdown(void) { } -- cgit v1.1