From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] tg3: Fix single-vector MSI-X code Date: Tue, 17 Jan 2012 23:56:40 -0500 (EST) Message-ID: <20120117.235640.1394063282901449922.davem@davemloft.net> References: <1326850043-23417-1-git-send-email-mcarlson@broadcom.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, mchan@broadcom.com To: mcarlson@broadcom.com Return-path: Received: from shards.monkeyblade.net ([198.137.202.13]:33123 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757174Ab2ARE4n (ORCPT ); Tue, 17 Jan 2012 23:56:43 -0500 In-Reply-To: <1326850043-23417-1-git-send-email-mcarlson@broadcom.com> Sender: netdev-owner@vger.kernel.org List-ID: From: "Matt Carlson" Date: Tue, 17 Jan 2012 17:27:23 -0800 > Kdump kernels leave MSI-X interrupts (as setup by the crashed kernel) > enabled. However, kdump only enables one CPU in the new environment, > thus causing tg3 to abort MSI-X setup. When the driver attempts to > enable INTA or MSI interrupt modes on a kdump kernel, interrupt > delivery fails. > > This patch attempts to workaround the problem by forcing the driver > to enable a single MSI-X interrupt. In such a configuration, the > device's multivector interrupt mode must be disabled. > > Signed-off-by: Matt Carlson Applied.