Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753245AbYKZJCL (ORCPT ); Wed, 26 Nov 2008 04:02:11 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751924AbYKZJBw (ORCPT ); Wed, 26 Nov 2008 04:01:52 -0500 Received: from gw1.cosmosbay.com ([86.65.150.130]:40644 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751911AbYKZJBv convert rfc822-to-8bit (ORCPT ); Wed, 26 Nov 2008 04:01:51 -0500 Message-ID: <492D107B.1060303@cosmosbay.com> Date: Wed, 26 Nov 2008 10:01:47 +0100 From: Eric Dumazet User-Agent: Thunderbird 2.0.0.18 (Windows/20081105) MIME-Version: 1.0 To: ut CC: linux kernel , Linux Netdev List Subject: Re: [BUG] linux-2.6.28-rc3 regression: IRQ smp_affinities not respected References: <491154C8.3040401@cosmosbay.com> In-Reply-To: <491154C8.3040401@cosmosbay.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8BIT X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-1.6 (gw1.cosmosbay.com [0.0.0.0]); Wed, 26 Nov 2008 10:01:48 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1169 Lines: 37 Eric Dumazet a ?crit : > Michael Chan a ?crit : >> I believe this may be the patch that broke it: >> >> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ce6fce4295ba727b36fdc73040e444bd1aae64cd >> >> >> I don't remember all the details, but the Broadcom 5708 chip is >> affected because it does not support MSI per-vector masking. >> >> One way to get around is to disable MSI with bnx2 parameter >> disable_msi=1. >> > > I tried this MSI disabling and yes, it now works. > > 16: 42726 128 105 106 89 > 89 145 152 IO-APIC-fasteoi uhci_hcd:usb1, eth0, eth1 > I believe the bnx2 driver doesnt work at all if !disable_msi (default setting) Doing a "echo 0 >/sys/devices/system/cpu/cpu1/online" just freeze network No messages logged If loaded with disable_msi=1, the cpu unplug works as expected. Thats a pretty serious issue. -- 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/