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x86: disable apic timer for AMD C1E enabled CPUs

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AMDs C1E enabled CPUs stop the local apic timer, when both cores are
idle. This is a hardware feature which breaks highres/dynticks.
Add the same quirk as we have for 32 bit already.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
This commit is contained in:
Thomas Gleixner 2007-10-12 23:04:07 +02:00 • committed by Thomas Gleixner
commit fb79d22e1d
3 changed files with 36 additions and 1 deletions
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1
include/asm-x86/apic_64.h
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@ -19,6 +19,7 @@
extern int apic_verbosity;
extern int apic_runs_main_timer;
extern int ioapic_force;
extern int disable_apic_timer;
/*
* Define the default level of output to be very little