Re: [PATCH 2/2] dma: Add IOMMU static calls with clear default ops

[Easwar Hariharan]

On 7/11/2024 3:38 AM, Leon Romanovsky wrote:
> From: Leon Romanovsky <leonro@xxxxxxxxxx>
> 
> Most of the IOMMU drivers are using the same DMA operations, which are
> default ones implemented in drivers/iomem/dma-iomem.c. So it makes sense

s/iomem/iommu?

> to properly set them as a default with direct call without need to
> perform function pointer dereference.
> 
> During system initialization, the IOMMU driver can set its own DMA and
> in such case, the default DMA operations will be overridden.
> 
> Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
> ---
>  MAINTAINERS               |  1 +
>  drivers/iommu/dma-iommu.c | 24 +++++++-------
>  include/linux/iommu-dma.h | 50 +++++++++++++++++++++++++++++
>  kernel/dma/iommu.h        | 67 +++++++++++++++++++++++++++++++++++++++
>  kernel/dma/mapping.c      |  9 +++---
>  5 files changed, 134 insertions(+), 17 deletions(-)
>  create mode 100644 include/linux/iommu-dma.h
>  create mode 100644 kernel/dma/iommu.h
> 

<snip>