Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751742AbdH3OZO (ORCPT ); Wed, 30 Aug 2017 10:25:14 -0400 Received: from mail-wm0-f67.google.com ([74.125.82.67]:38265 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751679AbdH3OZK (ORCPT ); Wed, 30 Aug 2017 10:25:10 -0400 From: Jan Glauber To: Bjorn Helgaas Cc: linux-pci@vger.kernel.org, Alex Williamson , linux-kernel@vger.kernel.org, david.daney@cavium.com, Jon Masters , Robert Richter , linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, Jan Glauber Subject: [PATCH v3 0/3] Workaround for bus/slot reset on Cavium cn8xxx root ports Date: Wed, 30 Aug 2017 16:24:51 +0200 Message-Id: <20170830142454.10971-1-jglauber@cavium.com> X-Mailer: git-send-email 2.9.0.rc0.21.g7777322 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 799 Lines: 24 Using vfio-pci on a combination of cn8xxx and some PCI devices results in a kernel panic. This is triggered by issuing a bus or a slot reset on the PCI device. The solution is to prevent the reset. I've dropped the vfio patch from the previous series as vfio-pci already checks in the reset path for pci_bus_resetable() and pci_slot_resetable(). With this series both checks indicate that the reset is not possible preventing the kernel panic. David Daney (2): PCI: Allow PCI_DEV_FLAGS_NO_BUS_RESET to be used on bus device PCI: Avoid bus reset for Cavium cn8xxx root ports Jan Glauber (1): PCI: Avoid slot reset for Cavium cn8xxx root ports drivers/pci/pci.c | 4 ++++ drivers/pci/quirks.c | 24 ++++++++++++++++++++++++ 2 files changed, 28 insertions(+) -- 2.9.0.rc0.21.g7777322