From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Williamson Subject: Re: [v4,0/3] Workaround for bus/slot reset on Cavium cn8xxx root ports Date: Wed, 20 Sep 2017 12:09:12 -0600 Message-ID: <20170920120912.7544420d@t450s.home> References: <20170908081033.3025-1-jglauber@cavium.com> <20170912094049.GA14111@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Jan Glauber , Bjorn Helgaas , kvm@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Jon Masters , linux-arm-kernel@lists.infradead.org, david.daney@cavium.com, Robert Richter To: Vadim Lomovtsev Return-path: In-Reply-To: <20170912094049.GA14111@localhost.localdomain> Sender: linux-pci-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On Tue, 12 Sep 2017 02:40:49 -0700 Vadim Lomovtsev wrote: > Hi all, > > Are there any updates on this ? > Comments/objections/acks/nacks ? > > WBBR, > Vadim > > On Fri, Sep 08, 2017 at 10:10:30AM +0200, Jan Glauber wrote: > > 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. > > > > 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 if bus reset is not possible > > > > drivers/pci/pci.c | 8 ++++++++ > > drivers/pci/quirks.c | 8 ++++++++ > > 2 files changed, 16 insertions(+) Looks ok to me, for series: Reviewed-by: Alex Williamson I am curious why we're happy targeting this quirk at a single device ID while at the same time trying to expand the ACS quirk to a notable fraction of the Cavium PCI device ID address space. Thanks, Alex