Re: [PATCH v3 01/13] iommu: Change type of pasid to unsigned int

[Andy Lutomirski]

On Wed, Jun 17, 2020 at 12:39 PM Luck, Tony <tony.luck@xxxxxxxxx> wrote:
>
> > Is PASID in the uapi at all?
>
>
> $ grep pasid include/uapi/linux/iommu.h
> * @pasid: Process Address Space ID
>         __u32   pasid;
>  * @pasid: Process Address Space ID
>         __u32   pasid;
>  * @pasid: Process Address Space ID
>         __u32   pasid;
>  * - If the PASID bit is set, the @pasid field is populated and the invalidation
>  * @pasid: process address space ID
>         __u64   pasid;
>  * struct iommu_inv_pasid_info - PASID Selective Invalidation Structure
>  * - If the PASID bit is set, the @pasid field is populated and the invalidation
>  * @pasid: process address space ID
> struct iommu_inv_pasid_info {
>         __u64   pasid;
>  * @pasid_info: invalidation data when @granularity is %IOMMU_INV_GRANU_PASID
>                 struct iommu_inv_pasid_info pasid_info;
>  * struct iommu_gpasid_bind_data_vtd - Intel VT-d specific data on device and guest
> struct iommu_gpasid_bind_data_vtd {
>  * struct iommu_gpasid_bind_data - Information about device and guest PASID binding
>  * @hpasid:     Process address space ID used for the guest mm in host IOMMU
>  * @gpasid:     Process address space ID used for the guest mm in guest IOMMU
> struct iommu_gpasid_bind_data {
>         __u64 hpasid;
>         __u64 gpasid;
>                 struct iommu_gpasid_bind_data_vtd vtd;


Aha.  I guess this is considerably older than I thought.