Re: [PATCH v4] introduce vfio-user protocol specification

[Stefan Hajnoczi]

On Tue, Sep 15, 2020 at 07:29:17AM -0700, Thanos Makatos wrote:
> This patch introduces the vfio-user protocol specification (formerly
> known as VFIO-over-socket), which is designed to allow devices to be
> emulated outside QEMU, in a separate process. vfio-user reuses the
> existing VFIO defines, structs and concepts.
> 
> It has been earlier discussed as an RFC in:
> "RFC: use VFIO over a UNIX domain socket to implement device offloading"
> 
> Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
> Signed-off-by: Thanos Makatos <thanos.makatos@nutanix.com>

I reviewed the recently-added kernel VFIO_IOMMU_DIRTY_PAGES ioctl and
VFIO_REGION_TYPE_MIGRATION features. They enable live migration and
device state save/load.

Including them early would be good because it's difficult to retrofit
live migration into existing code later.

Stefan

signature.asc
Description: PGP signature