Re: [PATCH v3 0/4] VFIO and IOMMU prerequisite stuff for IOMMU nesting support

["Cédric Le Goater" <clg@redhat.com>]

On 6/4/25 08:21, Zhenzhong Duan wrote:
> Hi,
> 
> The first 6 patches of [1] are all VFIO or IOMMUFD related additions.
> Split them out per Cédric and seek for quick acceptance.
> 
> I didn't copy changelog from [1] as it's a mix of the whole nesting series.
> 
> For who want a quick view of the whole nesting series [2].
> 
> Test done:
> - VFIO devices hotplug/unplug
> - build test on Windows
> 
> [1] https://lists.gnu.org/archive/html/qemu-devel/2025-05/msg05002.html
> [2] https://github.com/yiliu1765/qemu/tree/zhenzhong/iommufd_nesting.v1.wip
> 
> Thanks
> Zhenzhong
> 
> Changelog:
> v3:
> - add doc comment update for new field vendor_caps (Eric)
> 
> v2:
> - report kernel BUG as error instead of assert (Cédric)
> - merge patch2 and patch3 (Cédric)
> - handle vendor cap check directly from vtd_check_hiod, so patch6 removed (Cédric)
> - s/data_ptr/data (Cédric)
> - s/totally/total (Donald)
> 
> v1:
> - changed to save raw data in VendorCaps, so we can keep all vendor structure
>    decoding inside the backend and VFIO wouldn't need to care about types nor
>    what's inside the data.
> 
> 
> Zhenzhong Duan (4):
>    backends/iommufd: Add a helper to invalidate user-managed HWPT
>    vfio/iommufd: Add properties and handlers to
>      TYPE_HOST_IOMMU_DEVICE_IOMMUFD
>    vfio/iommufd: Implement [at|de]tach_hwpt handlers
>    vfio/iommufd: Save vendor specific device info
> 
>   include/system/host_iommu_device.h | 15 ++++++++
>   include/system/iommufd.h           | 54 ++++++++++++++++++++++++++++
>   backends/iommufd.c                 | 58 ++++++++++++++++++++++++++++++
>   hw/vfio/iommufd.c                  | 36 ++++++++++++++++---
>   backends/trace-events              |  1 +
>   5 files changed, 159 insertions(+), 5 deletions(-)
> 

vfio-next updated.

b4 complained for a couple of trailers :

     Reviewed-by: Nicolin Chen <nicolinc@nvidia.com> (✗ DKIM/nvidia.com)

I included them nevertheless.


Cheers,

C.