From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Pawe=c5=82_Staszewski?= Subject: Mellanox driver / cant access /prox/irq/XX/smp_affinity after upgrade from linux-4.13-rc4-next-20170811 to 4.13.0-rc5-next-20170815 Date: Tue, 15 Aug 2017 14:21:39 +0200 Message-ID: <357548fa-2987-4a90-1732-ad298384163e@itcare.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit To: Linux Kernel Network Developers Return-path: Received: from smtp19.iq.pl ([86.111.242.224]:54263 "EHLO smtp19.iq.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751147AbdHOMWr (ORCPT ); Tue, 15 Aug 2017 08:22:47 -0400 Received: from [192.168.2.200] (unknown [185.78.72.19]) (Authenticated sender: pstaszewski@itcare.pl) by smtp.iq.pl (Postfix) with ESMTPSA id 3xWs7T6PWbz3xCH for ; Tue, 15 Aug 2017 14:22:45 +0200 (CEST) Content-Language: pl Sender: netdev-owner@vger.kernel.org List-ID: Hi After upgrading kernel to latest next there is problem with accessing smp_affinity to write for mellanox driver For example - MEllanox: cat /proc/interrupts | grep ml 217: 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PCI-MSI 91750400-edge mlx5_pages_eq@pci:0000:af:00.0 218: 12237 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PCI-MSI 91750401-edge mlx5_cmd_eq@pci:0000:af:00.0 cat /proc/irq/218/smp_affinity ffffff,ffffffff echo "ffffff,ffffffff " > /proc/irq/218/smp_affinity -su: echo: write error: Input/output error For intel ixgbe: 90: 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PCI-MSI 12589056-edge enp24s0f3 cat /proc/irq/90/smp_affinity 0003ff,f0003fff echo "0003ff,f0003fff" > /proc/irq/90/smp_affinity Without errors. BR Pawel