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Date: Thu, 3 Sep 2026 11:46:47 -0700
From: Jacob Pan <jacob.pan@linux.microsoft.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: Wei Liu <wei.liu@kernel.org>, Mukesh R <mrathor@linux.microsoft.com>,
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 <aneesh.kumar@kernel.org>, jacob.pan@linux.microsoft.com
Subject: Re: [PATCH v5 3/9] mshv: Introduce basic mshv bridge device for
 VFIO to build upon
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Hi Jason,

On Thu, 3 Sep 2026 14:40:14 -0300
Jason Gunthorpe <jgg@nvidia.com> wrote:

> On Thu, Sep 03, 2026 at 09:13:28AM -0700, Wei Liu wrote:
> > > Does mshv use KVM at all? Can a kvm fd describe the partition?  
> > 
> > No. MSHV doesn't use KVM. We don't have a kvm fd. We have an mshv
> > fd to describe the partition. They are different virtualization
> > solutions.
> > 
> > In the ideal world, the fd should be hypervisor agnostic, not tied
> > to kvm.  
> 
> There is a patch generalizing vfio to work on FDs instead of KVM
> structures:
> 
>  https://patch.msgid.link/20260903-vfio-v2-1-ef4cd4190ae7@linux.ibm.com 
> 
> That's probably a good step long that line.
Yeah, ideally, it would be removing/rename device/group->kvm to
something like group/device->vm_file?