From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S933654AbeAXMwU (ORCPT <rfc822;w@1wt.eu>);
        Wed, 24 Jan 2018 07:52:20 -0500
Received: from Galois.linutronix.de ([146.0.238.70]:60490 "EHLO
        Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S933488AbeAXMwT (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Wed, 24 Jan 2018 07:52:19 -0500
Date: Wed, 24 Jan 2018 13:52:10 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Lyude Paul <lyude@redhat.com>
cc: hpa@zytor.com, keith.busch@intel.com, mingo@kernel.org,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: "irq/matrix: Spread interrupts on allocation" breaks nouveau in
 mainline kernel
In-Reply-To: <1516757219.29151.7.camel@redhat.com>
Message-ID: <alpine.DEB.2.20.1801241351080.1997@nanos>
References: <1516744873.29151.3.camel@redhat.com> <1516757219.29151.7.camel@redhat.com>
User-Agent: Alpine 2.20 (DEB 67 2015-01-07)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Tue, 23 Jan 2018, Lyude Paul wrote:

> JFYI: I confirmed this patch is definitely broken. I'm seeing nouveau get
> assigned the same MSI vector as another device on the system, which would
> explain why interrupts suddenly stop working. I'll keep looking into it further
> tomorrow.

How did you determine that it is the same MSI vector as another device?

Thanks,

	tglx