[PATCH] Fix CPU boot problem
From: Dave Hansen <haveblue@us.ibm.com> Hmmm. This is looking like fallout from the massive wli-bomb. Here's the loop that controls the cpu booting, before and after cpumask_t: - for (bit = 0; kicked < NR_CPUS && bit < BITS_PER_LONG; bit++) + for (bit = 0; kicked < NR_CPUS && bit < MAX_APICS; bit++) apicid = cpu_present_to_apicid(bit); "kicked" only gets incremented for CPUs that were successfully booted, so it doesn't help terminate the loop much. MAX_APICS is 256 on summit, which is *MUCH* bigger than BITS_PER_LONG. cpu_2_logical_apicid[NR_CPUS] which is referenced from cpu_present_to_apicid() is getting referenced up to MAX_APICs, which is bigger than NR_CPUS. Overflow. Bang. garbage != BAD_APICID :)
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