[libvirt] [PATCH V2] virpci: support driver_override sysfs interface

[Jim Fehlig]

On 08/31/2016 01:42 PM, Jim Fehlig wrote:
> On 08/30/2016 11:59 PM, Laine Stump wrote:
>> On 08/01/2016 11:36 PM, Jim Fehlig wrote:
>>> libvirt uses the new_id PCI sysfs interface to bind a PCI stub driver
>>> to a PCI device. The new_id interface is known to be buggy and racey,
>>> hence a more deterministic interface was introduced in the 3.12 kernel:
>>> driver_override. For more details see
>>>
>>> https://www.redhat.com/archives/libvir-list/2016-June/msg02124.html
>> That message details the change to the kernel that caused the regression for
>> Xen, but not the driver_override interface. Maybe you could add a link to the
>> kernel commit that adds driver_override:
>>
>> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/pci/pci-driver.c?h=v3.12&id=782a985d7af26db39e86070d28f987cad21313c0
> Yep, good point. Nice to have a description of the interface and examples of its
> use. I'll add it to the commit messages.
>
>>
>>
>> Everything else looks good, and passes my tests for vfio device assignment
>> (including when the host driver has been blacklisted).
>>
>> ACK. (Sorry I forgot about this earlier in the month :-/)
> Thanks! I'll wait until 2.2.0 is out before pushing this.

Pushed now that the release is out.

Regards,
Jim