[vfio-users] vfio, xeon e3s, acs, & gpus -- oh my!

[globalgorrilla at fastmail.fm]

On 3 Apr 2017, at 10:19, Steven Walter wrote:

> On Mon, Apr 3, 2017 at 1:08 PM,  <globalgorrilla at fastmail.fm> wrote:
>> On 2 Apr 2017, at 0:10, Joshua Hoblitt wrote:
>>
>>> I decided to go with an E6-1650 v4 / C612 based motherboard as I wanted
>>> both ECC memory and a BMC.
>>
>>
>> I think something this is the best option for the moment.
>>
>> Posted-interrupts are only on E5 v4 and Xeon-D.
>>
>> It makes a big difference with network cards (and GPUs).
>>
>> Does anyone know if AVIC or some other Ryzen feature provides for
>> posted-interrupts?
>
> By "posted interrupts" do you mean that they get delivered directly to
> the VM, bypassing the host?  If so, then yes enabling AVIC does
> provide that behavior.  With AVIC enabled (kvm_amd.avic=1), I do not
> see the counters in /proc/interrupts increment for passed-through
> devices.

Yes, that's it. Fantastic. Thanks!

> -- 
> -Steven Walter <stevenrwalter at gmail.com>