From mboxrd@z Thu Jan 1 00:00:00 1970 From: Markus Trippelsdorf Subject: Re: Bogus "APIC: NR_CPUS/possible_cpus limit of 4 reached" messages Date: Fri, 7 Oct 2016 16:09:26 +0200 Message-ID: <20161007140926.GA314@x4> References: <20161006112737.GA308@x4> <20161006124800.5a824dfc@lxorguk.ukuu.org.uk> <20161006115220.GB308@x4> <20161007132634.GA20654@x4> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from ud10.udmedia.de ([194.117.254.50]:46022 "EHLO mail.ud10.udmedia.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751412AbcJGOJa (ORCPT ); Fri, 7 Oct 2016 10:09:30 -0400 Content-Disposition: inline In-Reply-To: Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Thomas Gleixner Cc: One Thousand Gnomes , Gu Zheng , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Dou Liyang On 2016.10.07 at 15:55 +0200, Thomas Gleixner wrote: > On Fri, 7 Oct 2016, Markus Trippelsdorf wrote: > > On 2016.10.06 at 13:52 +0200, Markus Trippelsdorf wrote: > > > On 2016.10.06 at 12:48 +0100, One Thousand Gnomes wrote: > > > > On Thu, 6 Oct 2016 13:27:37 +0200 > > > > Markus Trippelsdorf 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). > > That's due to the recent cpuid -> nodeid changes. The patch below should > fix it. Indeed it does. Thanks for the quick fix. -- Markus