Zou Nan hai (on 08 Feb 2007 11:28:44 +0800) wrote: >Pin ar.kr2 of each CPU, so that smp_processor_id can use it. Historically ar.k2 has been reserved for debugging purposes, for example in ivt.S. Debuggers often need a location that can be used to track progress, it has to be somewhere that does not rely on TLB entries and is guaranteed to appear in MCA/INIT records - ar.k2 is perfect for this. Use Tony's suggestion of testing for a change in ar.k3 (guaranteed to be unique on every cpu) and caching the corresponding cpu number when it changes. - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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