Re: [PATCH] i386 boottime for_each_cpu broken

[Andi Kleen]

On Wed, Aug 10, 2005 at 10:59:28PM -0600, Zwane Mwaikambo wrote:
> for_each_cpu walks through all processors in cpu_possible_map, which is 
> defined as cpu_callout_map on i386 and isn't initialised until all 
> processors have been booted. This breaks things which do for_each_cpu 
> iterations early during boot. So, define cpu_possible_map as a bitmap with 
> NR_CPUS bits populated. This was triggered by a patch i'm working on which 
> does alloc_percpu before bringing up secondary processors.

Better is to initialize it in mpparse.c. That is what x86-64 is doing now.

-Andi
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