On Tue, Nov 06, 2007 at 04:28:20PM +0800, Zou Nan hai wrote:
> in 2.6.24-rc1 kernel,
> The /proc/cpuinfo display is wrong.
>
> Another issue is that it will display bogus cpus with wrong information
> if the kernel is compiled with a big CONFIG_NR_CPU.
>
> That is because before a cpu in cpu_present_map is up, c->cpu_index of
> that cpu is 0.
> thus the cpu_online(c->cpu_index) check in show_cpuinfo is invalid.
This issue should already be fixed with that patch
http://marc.info/?l=linux-kernel&m=119394201230954
> This patch will let cpuinfo_op use cpu_online_map instead of
> cpu_present_map to iterate cpus.
BTW, the problem affects i386 as well.
Regards,
Andreas
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