Re: [PATCH] x86/dpci: remove the dpci EOI timer

[Jan Beulich <jbeulich@xxxxxxxx>]

On 14.01.2021 11:22, Roger Pau Monné wrote:
> On Wed, Jan 13, 2021 at 04:31:33PM -0500, Jason Andryuk wrote:
>> On Wed, Jan 13, 2021 at 1:34 PM Jason Andryuk <jandryuk@xxxxxxxxx> wrote:
>>> I guess I'd also need to disable MSI for the two devices to ensure
>>> they are both using the GSI?
>>
>> lspci in dom0 shows the USB xhci controller, iwlwifi, and e1000e
>> devices all with IRQ 16 and all with MSI disabled ("MSI: Enabled-").
>> The two linux HVMs run with (PV) linux stubdoms, and the HVM kernels
>> were started with pci=nosmi.  Networking through the iwlwifi device
>> works for that VM while a mouse attached to the xhci controller is
>> also working in the second VM.  Is there something else I should test?
> 
> Not really, I think that test should be good enough, the issue is that
> we don't know which OS was seeing the issues noted by Kevin.

Why a specific OS? Isn't this also guarding against malice?

Jan