On 5/30/25 11:35 AM, Zhenzhong Duan wrote:
> Implement [at|de]tach_hwpt handlers in VFIO subsystem. vIOMMU
> utilizes them to attach to or detach from hwpt on host side.
>
> Signed-off-by: Yi Liu <yi.l....@intel.com>
> Signed-off-by: Zhenzhong Duan <zhenzhong.d...@intel.com>
> Reviewed-by: Cédric Le Goater <c...@redhat.com>
Reviewed-by: Eric Auger <eric.au...@redhat.com>
Eric
> ---
> hw/vfio/iommufd.c | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
>
> diff --git a/hw/vfio/iommufd.c b/hw/vfio/iommufd.c
> index 5fde2b633a..d661737c17 100644
> --- a/hw/vfio/iommufd.c
> +++ b/hw/vfio/iommufd.c
> @@ -810,6 +810,24 @@ static void vfio_iommu_iommufd_class_init(ObjectClass
> *klass, const void *data)
> vioc->query_dirty_bitmap = iommufd_query_dirty_bitmap;
> };
>
> +static bool
> +host_iommu_device_iommufd_vfio_attach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
> + uint32_t hwpt_id, Error **errp)
> +{
> + VFIODevice *vbasedev = HOST_IOMMU_DEVICE(idev)->agent;
> +
> + return !iommufd_cdev_attach_ioas_hwpt(vbasedev, hwpt_id, errp);
> +}
> +
> +static bool
> +host_iommu_device_iommufd_vfio_detach_hwpt(HostIOMMUDeviceIOMMUFD *idev,
> + Error **errp)
> +{
> + VFIODevice *vbasedev = HOST_IOMMU_DEVICE(idev)->agent;
> +
> + return iommufd_cdev_detach_ioas_hwpt(vbasedev, errp);
> +}
> +
> static bool hiod_iommufd_vfio_realize(HostIOMMUDevice *hiod, void *opaque,
> Error **errp)
> {
> @@ -864,10 +882,14 @@ hiod_iommufd_vfio_get_page_size_mask(HostIOMMUDevice
> *hiod)
> static void hiod_iommufd_vfio_class_init(ObjectClass *oc, const void *data)
> {
> HostIOMMUDeviceClass *hiodc = HOST_IOMMU_DEVICE_CLASS(oc);
> + HostIOMMUDeviceIOMMUFDClass *idevc = HOST_IOMMU_DEVICE_IOMMUFD_CLASS(oc);
>
> hiodc->realize = hiod_iommufd_vfio_realize;
> hiodc->get_iova_ranges = hiod_iommufd_vfio_get_iova_ranges;
> hiodc->get_page_size_mask = hiod_iommufd_vfio_get_page_size_mask;
> +
> + idevc->attach_hwpt = host_iommu_device_iommufd_vfio_attach_hwpt;
> + idevc->detach_hwpt = host_iommu_device_iommufd_vfio_detach_hwpt;
> };
>
> static const TypeInfo types[] = {
