Re: [v4,0/3] Workaround for bus/slot reset on Cavium cn8xxx root ports
From: Alex Williamson
Date: Wed Sep 20 2017 - 14:09:11 EST
On Tue, 12 Sep 2017 02:40:49 -0700
Vadim Lomovtsev <Vadim.Lomovtsev@xxxxxxxxxxxxxxxxxx> wrote:
> Hi all,
> Are there any updates on this ?
> Comments/objections/acks/nacks ?
> 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 <alex.williamson@xxxxxxxxxx>
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,