Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750791AbWEVMbK (ORCPT ); Mon, 22 May 2006 08:31:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750793AbWEVMbK (ORCPT ); Mon, 22 May 2006 08:31:10 -0400 Received: from linux01.gwdg.de ([134.76.13.21]:61131 "EHLO linux01.gwdg.de") by vger.kernel.org with ESMTP id S1750791AbWEVMbJ (ORCPT ); Mon, 22 May 2006 08:31:09 -0400 Date: Mon, 22 May 2006 14:31:05 +0200 (MEST) From: Jan Engelhardt To: Vladimir Dvorak cc: Andi Kleen , linux-kernel@vger.kernel.org Subject: Re: APIC error on CPUx In-Reply-To: <4471AC63.8060406@vdsoft.org> Message-ID: References: <44716A5F.3070208@vdsoft.org> <4471A777.2020404@vdsoft.org> <200605221403.16464.ak@suse.de> <4471AC63.8060406@vdsoft.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2188 Lines: 72 Hi, I also have this [a similar] message; it is produced repeatedly between 2.5 and 5 seconds whenever the ISDN card is dialled in: May 22 14:28:18 shanghai kernel: APIC error on CPU0: 02(02) Linux shanghai 2.6.17-rc4 #1 Sat May 20 00:06:16 CEST 2006 i686 athlon i386 GNU/Linux >>>>>Debian 3.1 >>>>>Linux mailserver 2.6.8-3-686-smp #1 SMP Thu Feb 9 07:05:39 UTC 2006 i686 >>>>That's an ancient kernel. >>>Yes, I agree. >>> ... but the latest in Debian/Sarge. :-) >>>Do you, Andi, thing that upgrade to latest vanilla one ( from >>>kernel.org ) should solve this problem ? >>Probably not. >>>> >>>>>GNU/Linux >>>>>Hardware: >>>>>Intel SR1200 >>>>> >>>>If it's an <=P3 class machine: most likely you have noise on the APIC bus. >>>> >>>Yes, you are right : >>>cat /proc/cpuinfo >>>... >>>model name : Intel(R) Pentium(R) III CPU family 1133MHz >>>... >>> >>>"Noise on APIC bus" means - " a lot of interrupts from devices" ? Yep. 14:29 shanghai:~ > (while :; do cat /proc/interrupts |grep -i hisax; sleep 1; done) 193: 1111340 IO-APIC-level SiS SI7012, HiSax 193: 1113106 IO-APIC-level SiS SI7012, HiSax 193: 1114857 IO-APIC-level SiS SI7012, HiSax 193: 1116599 IO-APIC-level SiS SI7012, HiSax 193: 1118328 IO-APIC-level SiS SI7012, HiSax 193: 1120093 IO-APIC-level SiS SI7012, HiSax 193: 1121858 IO-APIC-level SiS SI7012, HiSax 193: 1123608 IO-APIC-level SiS SI7012, HiSax (Hisax: CONFIG_HISAX_NETJET=y) The problem goes away with noapic or acpi=off, but of course that also means you don't have IRQs > 15. >>Usually a crappy/broken/misdesigned motherboard. Elitegroup L7S7A2 here. >And, probably, the latest question related to this topic: > >Can "noapic" or "nolapic" solve this ? Does it mean ( with these >parameters ) that devices will start to use 8259 interrupt controller >instead APIC ? > >Is harmfull put "noapic" on "nolapic" to cmdline ? Jan Engelhardt -- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/