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Date: Tue, 20 Oct 2020 17:14:03 -0300
From: Jason Gunthorpe <jgg@nvidia.com>
To: "Raj, Ashok" <ashok.raj@intel.com>
Subject: Re: (proposal) RE: [PATCH v7 00/16] vfio: expose virtual Shared
 Virtual Addressing to VMs
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On Tue, Oct 20, 2020 at 01:08:44PM -0700, Raj, Ashok wrote:
> On Tue, Oct 20, 2020 at 04:55:57PM -0300, Jason Gunthorpe wrote:
> > On Tue, Oct 20, 2020 at 12:51:46PM -0700, Raj, Ashok wrote:
> > > I think we agreed (or agree to disagree and commit) for device types that 
> > > we have for SIOV, VFIO based approach works well without having to re-invent 
> > > another way to do the same things. Not looking for a shortcut by any means, 
> > > but we need to plan around existing hardware though. Looks like vDPA took 
> > > some shortcuts then to not abstract iommu uAPI instead :-)? When all
> > > necessary hardware was available.. This would be a solved puzzle. 
> > 
> > I think it is the opposite, vIOMMU and related has outgrown VFIO as
> > the "home" and needs to stand alone.
> > 
> > Apparently the HW that will need PASID for vDPA is Intel HW, so if
> 
> So just to make this clear, I did check internally if there are any plans
> for vDPA + SVM. There are none at the moment. 

Not SVM, SIOV.

Jason
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