Re: [PATCH v6 02/13] iommufd: Move _iommufd_object_alloc helper to a sharable file

[Jason Gunthorpe]

On Wed, Oct 30, 2024 at 02:34:28PM -0700, Nicolin Chen wrote:
> The following patch will add a new vIOMMU allocator that will require this
> _iommufd_object_alloc to be sharable with IOMMU drivers (and iommufd too).
> 
> Add a new driver.c file that will be built with CONFIG_IOMMUFD_DRIVER_CORE
> selected by CONFIG_IOMMUFD, and put the CONFIG_DRIVER under that remaining
> to be selectable for drivers to build the existing iova_bitmap.c file.
> 
> Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
> Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
> ---
>  drivers/iommu/iommufd/Kconfig           |  5 ++++
>  drivers/iommu/iommufd/Makefile          |  5 +++-
>  drivers/iommu/iommufd/iommufd_private.h |  4 ---
>  include/linux/iommufd.h                 | 10 +++++++
>  drivers/iommu/iommufd/driver.c          | 40 +++++++++++++++++++++++++
>  drivers/iommu/iommufd/main.c            | 32 --------------------
>  6 files changed, 59 insertions(+), 37 deletions(-)
>  create mode 100644 drivers/iommu/iommufd/driver.c
> 
> diff --git a/drivers/iommu/iommufd/Kconfig b/drivers/iommu/iommufd/Kconfig
> index 76656fe0470d..83addbe2ff7b 100644
> --- a/drivers/iommu/iommufd/Kconfig
> +++ b/drivers/iommu/iommufd/Kconfig
> @@ -1,9 +1,14 @@
>  # SPDX-License-Identifier: GPL-2.0-only
> +config IOMMUFD_DRIVER_CORE
> +	tristate
> +	default IOMMUFD_DRIVER || IOMMUFD
> +
>  config IOMMUFD
>  	tristate "IOMMU Userspace API"
>  	select INTERVAL_TREE
>  	select INTERVAL_TREE_SPAN_ITER
>  	select IOMMU_API
> +	select IOMMUFD_DRIVER_CORE

Should drop the select

Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>

Jason