linux-kernel - Re: Bogus "APIC: NR_CPUS/possible_cpus limit of 4 reached" messages

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Message-ID: <20161006115220.GB308@x4>
Date:   Thu, 6 Oct 2016 13:52:20 +0200
From:   Markus Trippelsdorf <markus@...ppelsdorf.de>
To:     One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
Cc:     Gu Zheng <guz.fnst@...fujitsu.com>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: Bogus "APIC: NR_CPUS/possible_cpus limit of 4 reached" messages

On 2016.10.06 at 12:48 +0100, One Thousand Gnomes wrote:
> On Thu, 6 Oct 2016 13:27:37 +0200
> Markus Trippelsdorf <markus@...ppelsdorf.de> wrote:
> 
> > On current trunk I get during boot:
> > 
> > [    0.000000] APIC: NR_CPUS/possible_cpus limit of 4 reached.  Processor 4/0x84 ignored.
> > [    0.000000] APIC: NR_CPUS/possible_cpus limit of 4 reached.  Processor 5/0x85 ignored.
> > 
> > I don't think these messages make much sense on a 4-core machine.
> > 
> 
> Four cores with or without hyperthreading ?

Without. This is a rather old AMD machine (AMD Phenom II X4 955).

-- 
Markus