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

On 3 Apr 2017, at 10:21, globalgorrilla fastmail fm wrote:

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

On Mon, Apr 3, 2017 at 1:08 PM,  <globalgorrilla 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

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

Yes, that's it. Fantastic. Thanks!

This does make me interested in trying a Ryzen setup... the i7s AFAIK don't have posted-interrupts.

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