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Date:   Sun, 15 Oct 2023 00:14:01 -0700
From:   Nicolin Chen <nicolinc@nvidia.com>
To:     Jason Gunthorpe <jgg@nvidia.com>, Yi Liu <yi.l.liu@intel.com>
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Subject: Re: [PATCH v2 1/6] iommu: Add new iommu op to create domains owned
 by userspace
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On Thu, Sep 28, 2023 at 12:15:23AM -0700, Yi Liu wrote:

> diff --git a/include/uapi/linux/iommufd.h b/include/uapi/linux/iommufd.h
> index b4ba0c0cbab6..4a7c5c8fdbb4 100644
> --- a/include/uapi/linux/iommufd.h
> +++ b/include/uapi/linux/iommufd.h
> @@ -347,10 +347,20 @@ struct iommu_vfio_ioas {
>  };
>  #define IOMMU_VFIO_IOAS _IO(IOMMUFD_TYPE, IOMMUFD_CMD_VFIO_IOAS)
> 
> +/**
> + * enum iommufd_hwpt_alloc_flags - Flags for HWPT allocation
> + * @IOMMU_HWPT_ALLOC_NEST_PARENT: If set, allocate a domain which can serve
> + *                                as the parent domain in the nesting
> + *                                configuration.

I just noticed a nit here: we should probably align with other
parts of this file by using "HWPT" v.s. "domain"? I.e.

+ * @IOMMU_HWPT_ALLOC_NEST_PARENT: If set, allocate a HWPT which can serve
+ *                                as the parent HWPT in the nesting
+ *                                configuration.

Thanks
Nic