From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751918AbdJFO5L (ORCPT ); Fri, 6 Oct 2017 10:57:11 -0400 Received: from mail-pf0-f180.google.com ([209.85.192.180]:49358 "EHLO mail-pf0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751525AbdJFO5J (ORCPT ); Fri, 6 Oct 2017 10:57:09 -0400 X-Google-Smtp-Source: AOwi7QA98nXrRskj3XlA5OexjgAaOoF+LxEtf0kJDq4JmXaCpizwwYlNxKXZi9Is1QC2ysedvMObnQ== Date: Fri, 6 Oct 2017 07:57:00 -0700 From: Stephen Hemminger To: "Stahl, Manuel" Cc: "gregkh@linuxfoundation.org" , "devel@driverdev.osuosl.org" , "hjk@linutronix.de" , "linux-kernel@vger.kernel.org" , "sojkam1@fel.cvut.cz" Subject: Re: [PATCH 2/2] uio: Prefer MSI(X) interrupts in PCI drivers Message-ID: <20171006075700.587a5e22@xeon-e3> In-Reply-To: <1507297826.2915.18.camel@iis-extern.fraunhofer.de> References: <1507296707.2915.14.camel@iis-extern.fraunhofer.de> <1507296804.2915.16.camel@iis-extern.fraunhofer.de> <20171006134550.GA1626@kroah.com> <1507297826.2915.18.camel@iis-extern.fraunhofer.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by nfs id v96EvGZC002869 On Fri, 6 Oct 2017 13:50:44 +0000 "Stahl, Manuel" wrote: > MSI(X) interrupts are not shared between devices. So when available > those should be preferred over legacy interrupts. > > Signed-off-by: Manuel Stahl > --- >  drivers/uio/uio_pci_dmem_genirq.c | 27 ++++++++++++++++++++------- >  drivers/uio/uio_pci_generic.c     | 24 ++++++++++++++++++------ >  2 files changed, 38 insertions(+), 13 deletions(-) The last time I tried to do MSI-X with pci-generic it got rejected by the maintainer.