Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933302Ab3CRWFI (ORCPT ); Mon, 18 Mar 2013 18:05:08 -0400 Received: from cantor2.suse.de ([195.135.220.15]:39167 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756631Ab3CRWFF (ORCPT ); Mon, 18 Mar 2013 18:05:05 -0400 Date: Mon, 18 Mar 2013 23:05:02 +0100 (CET) From: Jiri Kosina To: Yinghai Lu Cc: Harald Arnesen , Kernel development list , "Rafael J. Wysocki" , Peter Hurley , Alan Stern , Thomas Meyer , Shawn Starr , USB list , linux-acpi@vger.kernel.org, Bjorn Helgaas , linux-pci@vger.kernel.org, Daniel Vetter , Imre Deak , Daniel Kurtz , dri-devel@lists.freedesktop.org Subject: Re: [3.9-rc1] irq 16: nobody cared (was [3.9-rc1] very poor interrupt responses) In-Reply-To: Message-ID: References: <1460519.ejNFI1DrGk@vostro.rjw.lan> <1363280764.26318.4.camel@thor.lan> <5657408.cYX6iimiA4@vostro.rjw.lan> <5142E7F0.4020002@gmail.com> User-Agent: Alpine 2.00 (LNX 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 798 Lines: 23 On Mon, 18 Mar 2013, Yinghai Lu wrote: > > Yes, switching from MSI to IO-APIC-fasteoi makes the report about lost > > interrupts go away. > > > > My understanding from the other mail is that DAniel Vetter already has an > > idea what might be going wrong with IRQ acking on GM45 chipsets; hopefully > > this datapoint regarding MSI will fit into it. > > What is /proc/interrupts difference between with and without pci=nomsi ? > > drm is forced to share irq 16? Yup, IRQ 16 is being shared, and one of the owners is i915. -- Jiri Kosina SUSE Labs -- 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/