Re: [PATCH v2] iommu: map reserved memory as cacheable if device is coherent

[Thierry Reding]

On Thu, Sep 14, 2023 at 03:52:58PM +0300, Laurentiu Tudor wrote:
> Check if the device is marked as DMA coherent in the DT and if so,
> map its reserved memory as cacheable in the IOMMU.
> This fixes the recently added IOMMU reserved memory support which
> uses IOMMU_RESV_DIRECT without properly building the PROT for the
> mapping.
> 
> Fixes: a5bf3cfce8cb ("iommu: Implement of_iommu_get_resv_regions()")
> Signed-off-by: Laurentiu Tudor <laurentiu.tudor@xxxxxxx>
> Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
> ---
> Changes in v2:
>  - added Reviewed-by tag
> 
>  drivers/iommu/of_iommu.c | 3 +++
>  1 file changed, 3 insertions(+)

Acked-by: Thierry Reding <treding@xxxxxxxxxx>

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