Re: [PATCH v3 01/21] iommu: Add iommu_paging_domain_alloc() interface

Jason Gunthorpe
2024-06-19T14:20:53Z

On Mon, Jun 10, 2024 at 04:55:35PM +0800, Lu Baolu wrote:
> Commit <17de3f5fdd35> ("iommu: Retire bus ops") removes iommu ops from
> bus. The iommu subsystem no longer relies on bus for operations. So the
> bus parameter in iommu_domain_alloc() is no longer relevant.
>
> Add a new interface named iommu_paging_domain_alloc(), which explicitly
> indicates the allocation of a paging domain for DMA managed by a kernel
> driver. The new interface takes a device pointer as its parameter, that
> better aligns with the current iommu subsystem.
>
> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
> ---
> include/linux/iommu.h | 6 ++++++
> drivers/iommu/iommu.c | 20 ++++++++++++++++++++
> 2 files changed, 26 insertions(+)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason