From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753698AbYDRWCS (ORCPT ); Fri, 18 Apr 2008 18:02:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751147AbYDRWCJ (ORCPT ); Fri, 18 Apr 2008 18:02:09 -0400 Received: from yw-out-2324.google.com ([74.125.46.28]:7543 "EHLO yw-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750751AbYDRWCH (ORCPT ); Fri, 18 Apr 2008 18:02:07 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=AuqLLMxNi7G4UDTynwrRvMYlSWBCxyTt3NnIrgJD31FxALSZZP3oDCFNWYzZHCmLZPQuWbh/NI7vVpqPHHRD4e8KCgf6KgSna2qU1G/2lLn0OALEeorN+cPcKzYYRcOXCnR1YRtvKDqZ9sYoJUpmwSy3DtPIDl04NdfpaypK3aM= Message-ID: <86802c440804181501w4e9563f2oe154c0744076e91e@mail.gmail.com> Date: Fri, 18 Apr 2008 15:01:43 -0700 From: "Yinghai Lu" To: "Jack Steiner" Subject: Re: [PATCH] - Increase MAX_APICS for large configs Cc: "Ingo Molnar" , tglx@linutronix.de, linux-mm@kvack.org, linux-kernel@vger.kernel.org, "H. Peter Anvin" , "mike travis" In-Reply-To: <20080418211423.GA4151@sgi.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080416163936.GA23099@sgi.com> <20080417110727.GA942@elte.hu> <20080418211423.GA4151@sgi.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 18, 2008 at 2:14 PM, Jack Steiner wrote: > On Thu, Apr 17, 2008 at 01:07:27PM +0200, Ingo Molnar wrote: > > > > * Jack Steiner wrote: > > > > > Increase the maximum number of apics when running very large > > > configurations. This patch has no affect on most systems. > > > > x86.git overnight random-qa testing found a boot crash and i bisected it > > down to this patch. The config is: > > > > http://redhat.com/~mingo/misc/config-Thu_Apr_17_10_17_14_CEST_2008.bad > > > > the failure is attached below. (I needed the exact boot parameters > > listed in that bootup log to see this failure.) > > > > it seems to be CONFIG_MAXSMP=y triggers the new more-apic-ids code and > > that causes some breakage elsewhere. [btw., this again shows how useful > > the CONFIG_MAXSMP debug feature is!] > > > > Ingo > > > > [ 0.000000] Linux version 2.6.25-rc9-sched-devel.git-x86-latest.git (mingo@dione) (gcc version 4.2.3) #260 SMP Thu Apr 17 10:58:11 CEST 2008 > > [ 0.000000] Command line: root=/dev/sda6 console=ttyS0,115200 earlyprintk=serial,ttyS0,115200 debug initcall_debug apic=verbose sysrq_always_enabled ignore_loglevel selinux=0 nmi_watchdog=2 profile=0 nosmp highres=0 nolapic_timer hpet=disable idle=poll highmem=512m nopat acpi=off > > [ 0.000000] BIOS-provided physical RAM map: > > Has anyone seen this failure?? (Using git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git > from 4/18 AM). > > I tried to reproduce the above failure on a small system & was not successful. > > Switched to a larger system (XE310 Intel-based 8p, 6GB). All attempts to boot fail > with the following. I backed out the MAX_APIC change, & changed NR_CPUS=8. Still fails. > > ... > [ 32.010000] ehci_hcd 0000:00:1d.7: port 6 high speed > [ 32.010000] ehci_hcd 0000:00:1d.7: GetStatus port 6 status 001005 POWER sig=se0 PE CONNECT > [ 32.054003] usb usb2: New USB device found, idVendor=1d6b, idProduct=0001 > [ 32.058003] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1 > [ 32.062003] usb usb2: Product: UHCI Host Controller > [ 32.066004] usb usb2: Manufacturer: Linux 2.6.25-x86-latest.git uhci_hcd > [ 32.070004] usb usb2: SerialNumber: 0000:00:1d.0 > [ 32.074004] PCI: Found IRQ 10 for device 0000:00:1d.1 > [ 32.078004] PCI: Sharing IRQ 10 with 0000:00:1f.2 > [ 32.082005] PCI: Sharing IRQ 10 with 0000:00:1f.3 > [ 32.086005] PCI: Sharing IRQ 10 with 0000:04:00.1 > [ 32.090005] PCI: Setting latency timer of device 0000:00:1d.1 to 64 > [ 32.094005] uhci_hcd 0000:00:1d.1: UHCI Host Controller > [ 32.098006] usb 1-6: new high speed USB device using ehci_hcd and address 2 > [ 32.102006] nommu_map_single: overflow 1af757720+8 > > Full log: > > > [ 0.000000] Linux version 2.6.25-x86-latest.git (root@cleopatra1) (gcc version 4.1.1 20070105 (Red Hat 4.1.1-52)) #2 SMP Fri Apr 18 09:36:33 CDT 2008 > [ 0.000000] Command line: root=/dev/sda2 console=ttyS1,38400n8 debug initcall_debug apic=verbose sysrq_always_enabled ignore_loglevel selinux=0 nmi_watchdog=2 profile=0 nosmp highres=0 nolapic_timer hpet=disable idle=poll highmem=512m nopat acpi=off how about without acpi=off? can you make sure acpi=off works with previous kernel in that box? YH