From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755188AbYHNVYm (ORCPT ); Thu, 14 Aug 2008 17:24:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751925AbYHNVYd (ORCPT ); Thu, 14 Aug 2008 17:24:33 -0400 Received: from mail-gx0-f16.google.com ([209.85.217.16]:55819 "EHLO mail-gx0-f16.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751786AbYHNVYc (ORCPT ); Thu, 14 Aug 2008 17:24:32 -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=T2pZ4y7iwiWWulv1xZyRRAiitssPbti485v9klURNZabqBM8PuTgCTQ71EkIH+n22T bNqLqjhvKuDXDDnaCy903sn8/Qqt3RVwm/IY52EBZXikv/qILdFgEDjJbm1A4KS94EeX FrerTP+ZSu7OiZvAZTjHD+uF7ctMbFrkG0GKs= Message-ID: <86802c440808141424u3284f862gcd81e3cc585ddac4@mail.gmail.com> Date: Thu, 14 Aug 2008 14:24:31 -0700 From: "Yinghai Lu" To: "Eric W. Biederman" , "Ingo Molnar" Subject: Re: [PATCH 00/53] dyn_array/nr_irqs/sparse_irq support v10 Cc: "Thomas Gleixner" , "H. Peter Anvin" , linux-kernel@vger.kernel.org, "Alan Cox" , "Andrew Morton" In-Reply-To: <86802c440808141342k6cb0dc59ud067018b0a171232@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1218705441-21838-1-git-send-email-yhlu.kernel@gmail.com> <20080814132638.GA18743@elte.hu> <86802c440808141201o2c66236cwbc5ce37f9675504d@mail.gmail.com> <86802c440808141342k6cb0dc59ud067018b0a171232@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org find something interesting: found new irq_cfg for irq 20 0 add_pin_to_irq: irq 20 --> apic 0 pin 20 assign_irq_vector: irq 20 vector 0x59 cpu 5 IOAPIC[0]: Set routing entry (0-20 -> 0x59 -> IRQ 20 Mode:1 Active:1) found new irq_desc for irq 20 pci 0000:00:02.1: PCI INT B -> Link[LUS2] -> GSI 20 (level, low) -> IRQ 20 IO APIC #0...... .... register #00: 00000000 ....... : physical APIC id: 00 ....... : Delivery Type: 0 ....... : LTS : 0 .... register #01: 00170011 ....... : max redirection entries: 0017 ....... : PRQ implemented: 0 ....... : IO APIC version: 0011 .... register #02: 00000000 ....... : arbitration: 00 .... IRQ redirection table: NR Dst Mask Trig IRR Pol Stat Dmod Deli Vect: ... 14 09 1 1 0 1 0 0 0 59 ... ehci_hcd 0000:00:02.1: USB 2.0 started, EHCI 1.00, driver 10 Dec 2004 do_IRQ: cannot handle IRQ -1 vector 0x59 cpu 0 ------------[ cut here ]------------ Kernel BUG at 40206b11 [verbose debug info unavailable] invalid opcode: 0000 [#1] SMP Modules linked in: Pid: 70, comm: kasyncinit Not tainted (2.6.27-rc3-tip-00191-g98ccb89-dirty #23) EIP: 0060:[<40206b11>] EFLAGS: 00010092 CPU: 0 EIP is at do_IRQ+0x6b/0xae EAX: 00000032 EBX: 00001d28 ECX: 00003434 EDX: 00000046 ESI: 00000000 EDI: 00000059 EBP: c7a37d3c ESP: c7a37d14 DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 Process kasyncinit (pid: 70, ti=c7a36000 task=c79c9860 task.ti=c7a36000) Stack: 40a74317 40814ea0 ffffffff 00000059 00000000 00000000 ffffffff c421bd20 c7a37d9c c7a37dac c7a37d7c 4020555f c421bd20 00000000 c421bd20 c7a37d9c c7a37dac c7a37d7c 40b717f8 0000007b 0000007b 000000d8 ffffffa6 4080db6c Call Trace: [<4020555f>] ? common_interrupt+0x23/0x28 it is on 16cores system with 32bit bigsmp, so it is using phy_flat cpu 5 has apicid 9, and ioapic reg setting right with Dmod= 0 ( phys) but io_apic controller deliver that interrupt to cpu0 (with apicid = 4) instead of cpu 5 (with apic id = 9) look at the 64 bit, TARGET_CPUS for phys_flat is cpu_online_map and 32bit bigsmp TARGET_CPUS is only one cpu set and rotating with online cpu... Change 32bit bigsmp TARGE_CPUS ? YH