Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261184AbVCOMJQ (ORCPT ); Tue, 15 Mar 2005 07:09:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261185AbVCOMJQ (ORCPT ); Tue, 15 Mar 2005 07:09:16 -0500 Received: from wproxy.gmail.com ([64.233.184.206]:8404 "EHLO wproxy.gmail.com") by vger.kernel.org with ESMTP id S261184AbVCOMJH (ORCPT ); Tue, 15 Mar 2005 07:09:07 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:reply-to:to:subject:mime-version:content-type:content-transfer-encoding; b=Wkef/KKjf4rovwn4G+QE8jfzCCyeBUkBY4GgBMCd3A7fAQqtQ0J+fKCnmrv2pCo2053nVG5epkGTZ9hOG/EcBA23O+U1jKMOINDyNUMYUhbZgZfpz8ZMUgZDj4q90l2Gj+tAonjCytbGfmZoIB6ONlH1YhJhXQ3rgdkIdC7Zh1E= Message-ID: <5a2cf1f6050315040956a512a6@mail.gmail.com> Date: Tue, 15 Mar 2005 13:09:03 +0100 From: jerome lacoste Reply-To: jerome lacoste To: lkml Subject: enabling IOAPIC on C3 processor? Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1702 Lines: 46 I have a VIA Epia M10000 board that crashes very badly (and pretty often, especially when using DMA). I want to fix that. Serial console + magic SysRQ didn't help so I am going the nmi watchdog way. But in order to have nmi watchdog I need APIC, right? The C3 processor seems to support IOAPIC. (http://www.via.com.tw/en/products/processors/c3/specs.jsp) But: - I don't see anything in the BIOS related to APIC. - grep APIC /lib/modules/`uname -r`/build/.config shows me that all APIC options are 'y'. - dmesg | grep APIC tells me "no local APIC present or hardware disabled". - adding lapic kernel parameter doesn't change that. - and of course, nmi_watchdog=1 or 2 gives me NMI count 0 in /proc/interrupts. Did I miss something when it comes to enabling IOAPIC support on C3 processor? Note: I also see a lot an increasing ERR count in /proc/interrupts, especially when I put my box in conditions that make it also more unstable (i.e. sending files on the network while using the PVR-350 using mythtv). Not sure if it is related. Jerome medios@medios:~$ dmesg | grep APIC No local APIC present or hardware disabled mapped APIC to ffffd000 (013c1000) medios@medios:~$ grep APIC /lib/modules/`uname -r`/build/.config CONFIG_X86_UP_APIC=y CONFIG_X86_UP_IOAPIC=y CONFIG_X86_LOCAL_APIC=y CONFIG_X86_IO_APIC=y Grub options [...] kernel /vmlinuz-2.6.11-medios1 root=/dev/hda1 ro console=ttyS0,57600n8 console=tty0 nmi_watchdog=1 lapic [...] - 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/