Messages in this thread | | | Date | Thu, 2 Oct 2008 15:25:21 -0400 | From | Chuck Ebbert <> | Subject | Re: [patch x86/core] x86: allow number of additional hotplug CPUs to be set at compile time |
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On Thu, 02 Oct 2008 11:12:51 +0200 Andi Kleen <andi@firstfloor.org> wrote:
> Chuck Ebbert <cebbert@redhat.com> writes: > > > 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. > > You can set this with additional_cpus=... at boot time. > I don't think each runtime option needs a CONFIG option too. >
Well not all of them, but this one is a good candidate. Either that or we should just change the default to zero.
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