From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753456AbYIANWo (ORCPT ); Mon, 1 Sep 2008 09:22:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751373AbYIANWg (ORCPT ); Mon, 1 Sep 2008 09:22:36 -0400 Received: from NAT-170.Local.iNES.RO ([80.86.100.170]:56315 "EHLO blade.ines.ro" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751200AbYIANWf (ORCPT ); Mon, 1 Sep 2008 09:22:35 -0400 X-Greylist: delayed 1380 seconds by postgrey-1.27 at vger.kernel.org; Mon, 01 Sep 2008 09:22:35 EDT Subject: IRQ routing / assignment issue From: Radu Rendec To: linux-kernel@vger.kernel.org Content-Type: text/plain Date: Mon, 01 Sep 2008 15:59:32 +0300 Message-Id: <1220273972.16764.14.camel@blade.ines.ro> Mime-Version: 1.0 X-Mailer: Evolution 2.12.3 (2.12.3-5.fc8) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, I'm trying to make the kernel assign different irqs for two NICs connected to _separate_ pci buses. Messing around with pirq= kenrel parameter didn't seem to change anything. The machine is a smp (dual-xeon). Relevant lspci output is: 01:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 11) 02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 11) IRQ assignment dmesg output is: ACPI: PCI Interrupt 0000:01:00.0[A] -> GSI 16 (level, low) -> IRQ 16 ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 16 At the moment I'm almost clueless about how irq routing / assignment works (either in general or in linux), so any suggestion would help - even "rtfm" would be helpful, as long as you specify what is the appropriate manual ;) If you are so kind to reply, please include my address in cc (I'm not subscribed). Thanks, Radu Rendec