On Fri, 2013-08-02 at 17:37 -0600, Alex Williamson wrote:
> > Yes.
> >
> > We have that similar issue with error handling, when the driver doesn't
> > have the right hooks, we simulate an unplug, reset, then replug.
> >
> > Maybe we could provide generic helpers to do that...
>
> Devices going
On Sat, 2013-08-03 at 09:15 +1000, Benjamin Herrenschmidt wrote:
> On Fri, 2013-08-02 at 16:49 -0600, Bjorn Helgaas wrote:
> > [+cc linux-pci]
> >
> > On Fri, Aug 2, 2013 at 3:28 PM, Benjamin Herrenschmidt
> > wrote:
> >
> > > Right. Another use case is, I know of devices that need a fundamental
On Fri, 2013-08-02 at 16:49 -0600, Bjorn Helgaas wrote:
> [+cc linux-pci]
>
> On Fri, Aug 2, 2013 at 3:28 PM, Benjamin Herrenschmidt
> wrote:
>
> > Right. Another use case is, I know of devices that need a fundamental
> > reset (PERST) after applying a FW update.
>
> This is a tangent from the
[+cc linux-pci]
On Fri, Aug 2, 2013 at 3:28 PM, Benjamin Herrenschmidt
wrote:
> Right. Another use case is, I know of devices that need a fundamental
> reset (PERST) after applying a FW update.
This is a tangent from the real discussion here, but the question of
resetting a device after a firmw
On Fri, 2013-08-02 at 10:36 -0600, Alex Williamson wrote:
> > Also in some cases, at least for us, we have a problem where the scope
> > of the reset can be larger than the group ... in this case I think we
> > need to forbid the reset.
>
> Interesting, I would have ventured to guess that resets
On Fri, 2013-08-02 at 15:10 +1000, Benjamin Herrenschmidt wrote:
> On Thu, 2013-08-01 at 16:18 -0600, Alex Williamson wrote:
> > vfio-pci needs to support an interface to do hot resets (PCI parent
> > bridge secondary bus reset). We need this to support reset of
> > co-assigned devices where one
On Thu, 2013-08-01 at 16:18 -0600, Alex Williamson wrote:
> vfio-pci needs to support an interface to do hot resets (PCI parent
> bridge secondary bus reset). We need this to support reset of
> co-assigned devices where one or more of the devices does not support
> function level reset. In parti
vfio-pci needs to support an interface to do hot resets (PCI parent
bridge secondary bus reset). We need this to support reset of
co-assigned devices where one or more of the devices does not support
function level reset. In particular, discrete graphics cards typically
have no reset options oth
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