Messages in this thread | | | Date | Mon, 4 Nov 2013 15:10:51 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86: Allow NR_CPUS=1024 |
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* Josh Boyer <jwboyer@redhat.com> wrote:
> > Why touch MAXSMP at all? It's really just a shortcut for 'configure > > the kernel silly large', via a single option, nothing else. You are > > not forced to use it and it should not affect configurability of > > NR_CPUS. > > > > What we _really_ want here is to fix NR_CPUS setting: to extend its > > range and to enforce that NR_CPUS cannot be set larger than 512 > > without setting CONFIG_CPUMASK_OFFSTACK. > > OK. I was just thinking that if we've come to the conclusion that 4096 > CPUs isn't silly large anymore, we should make MAXSMP be something we > consider silly large. [...]
MAXSMP is also supposed to track the real hardware max as well on x86 - i.e. we should only increase it to 8192 etc. if such hardware exists.
Thanks,
Ingo
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