[Intel-gfx] [PATCH v3 0/6] vfio: Make emulated devices prepared for vfio device cdev

[Nicolin Chen]

On Mon, Mar 27, 2023 at 02:33:45AM -0700, Yi Liu wrote:
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> 
> 
> The .bind_iommufd op of vfio emulated devices are either empty or does
> nothing. This is different with the vfio physical devices, to add vfio
> device cdev, need to make them act the same.
> 
> This series first makes the .bind_iommufd op of vfio emulated devices
> to create iommufd_access, this introduces a new iommufd API. Then let
> the driver that does not provide .bind_iommufd op to use the vfio emulated
> iommufd op set. This makes all vfio device drivers have consistent iommufd
> operations, which is good for adding new device uAPIs in the device cdev
> series.
> 
> Change log:
> 
> v3:
>  - Use iommufd_get_ioas() for ioas get, hence patch 01 is added to modify
>    the input parameter of iommufd_get_ioas(). (Jason)
>  - Add r-b from Jason and Kevin
>  - Add t-b from Terrence Xu

This runs well with iommufd selftest on x86 and QEMU sanity on
ARM64, applying nesting series on top of this and cdev series:
https://github.com/nicolinc/iommufd/commits/wip/iommufd_nesting-03272023

Tested-by: Nicolin Chen <nicolinc at nvidia.com>