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SubjectRe: the maxcpus= boot parameter broke somewhere along the line
On 2012-03-06 17:17 +0200, Sasha Levin wrote:
> On Tue, Mar 6, 2012 at 4:59 PM, Jeff Moyer <jmoyer@redhat.com> wrote:
> > When booting my machine with maxcpus=1, it seems to be ignored with
> > 3.3.0-rc3.  I know that 3.1.0-rc3 works fine, but I haven't had time to
> > track it down any further than that.  I've attached the dmesg from my
> > machine.  Let me know if there is any other information that would help
> > in solving this.
>
> [snip]
>
> > Brought up 1 CPUs
> > Total of 1 processors activated (4256.06 BogoMIPS).
>
> Looks like it indeed brings up only one CPU, what's the problem there?

If you scroll further down it seems that the remaining CPUs are brought
online near the end of the boot?

[...]
udev: starting version 147
SMP alternatives: switching to SMP code
WARNING! power/level is deprecated; use power/control instead
EDAC MC: Ver: 2.1.0
Booting Node 0 Processor 3 APIC 0x3
smpboot cpu 3: start_ip = 9a000
EDAC MC0: Giving out device to 'i3200_edac' 'i3200': DEV 0000:00:00.0
NMI watchdog enabled, takes one hw-pmu counter.
Booting Node 0 Processor 2 APIC 0x1
smpboot cpu 2: start_ip = 9a000
NMI watchdog enabled, takes one hw-pmu counter.
Booting Node 0 Processor 1 APIC 0x2
smpboot cpu 1: start_ip = 9a000
NMI watchdog enabled, takes one hw-pmu counter.
Cheers,
--
Nick Bowler, Elliptic Technologies (http://www.elliptictech.com/)

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