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Andi Kleen 0c3749c41f [PATCH] x86_64: Calibrate APIC timer using PM timer ... On some broken motherboards (at least one NForce3 based AMD64 laptop) the PIT timer runs at a incorrect frequency. This patch adds a new option "apicpmtimer" that allows to use the APIC timer and calibrate it using the PMTimer. It requires the earlier patch that allows to run the main timer from the APIC. Specifying apicpmtimer implies apicmaintimer. The option defaults to off for now. I tested it on a few systems and the resulting APIC timer frequencies were usually a bit off, but always <1%, which should be tolerable. TBD figure out heuristic to enable this automatically on the affected systems TBD perhaps do it on all NForce3s or using DMI? Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		19 years ago
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boot-options.txt	[PATCH] x86_64: Calibrate APIC timer using PM timer	19 years ago
cpu-hotplug-spec	[PATCH] x86_64: Add documentation for CPU hotplug ACPI extension	19 years ago
mm.txt	…