Re: [PATCH v4 0/3] Workaround for bus/slot reset on Cavium cn8xxx root ports

From: Bjorn Helgaas
Date: Wed Oct 11 2017 - 14:32:13 EST


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(+)

Applied to pci/host-thunder for v4.15, thanks.

I reordered and renamed them like this:

PCI: Mark Cavium CN8xxx to avoid bus reset
PCI: Avoid bus reset if bridge itself is broken
PCI: Avoid slot reset if bridge itself is broken