Messages in this thread | | | Date | Thu, 02 Oct 2008 12:48:49 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [patch x86/core] x86: allow number of additional hotplug CPUs to be set at compile time, V2 |
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Ingo Molnar wrote: >> >> The default number of additional CPU IDs for hotplugging is determined >> by asking ACPI or mptables how many "disabled" CPUs there are in the >> system, but many systems get this wrong so that e.g. a uniprocessor >> machine gets an extra CPU allocated and never switches to single CPU >> mode. >> >> And sometimes CPU hotplugging is enabled only for suspend/hibernate >> anyway, so the additional CPU IDs are not wanted. Allow the number to >> be set to zero at compile time. >>
Wouldn't this be better to have a runtime option?
-hpa
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