ACK: [SRU][Artful] using vfio-pci on a combination of cn8xxx and some PCI devices results in a kernel panic

[Kleber Souza]

On 05/10/18 21:32, Manoj Iyer wrote:
> Bug: https://launchpad.net/bugs/1770254
> 
> Please consider these three patches cherry-picked cleanly from upstream
> for SRU to Artful. On Cavium cn8xxx systems, 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,
> and observed when you pass through a PCI device from host to guest. 
> 
> These patches are already in Bionic, we need these patches in Artful so 
> that xenial linux-hwe also has the fix. The platforms of interest were 
> certified with Xenial and linux-hwe, so we are interested in fixing this 
> only in Artful.
> 
> A test kernel is available in ppa:manjo/lp1770254 and was tested by me
> on a Cavium CN88XX system, and results are posted to the bug report. 
> 

Clean cherry-picks, tested and they seem to have a small regression
potential.

Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>