Re: [PATCH v6 12/16] iommu/dma: Enable IOMMU_DMA for 64-bit RISC-V

[Nutty.Liu]

On 9/25/2026 11:16 PM, Andrew Jones wrote:
> From: Tomasz Jeznach <tomasz.jeznach@xxxxxxxxx>
>
> Enable IOMMU_DMA for 64-bit RISC-V now that the RISC-V
> IOMMU driver supports MSI remapping.
>
> Signed-off-by: Tomasz Jeznach <tjeznach@xxxxxxxxxxxx>
> Signed-off-by: Andrew Jones <andrew.jones@xxxxxxxxxxxxxxxx>
> Tested-by: Fangyu Yu <fangyu.yu@xxxxxxxxxxxxxxxxx>
Reviewed-by: Nutty Liu <nutty.liu@xxxxxxxxxxx>

Thanks,
Nutty
> ---
>   drivers/iommu/Kconfig | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
> index 27954f462582..2d38d5b5accd 100644
> --- a/drivers/iommu/Kconfig
> +++ b/drivers/iommu/Kconfig
> @@ -151,7 +151,7 @@ config OF_IOMMU
>   
>   # IOMMU-agnostic DMA-mapping layer
>   config IOMMU_DMA
> -	def_bool ARM64 || X86 || S390
> +	def_bool ARM64 || X86 || S390 || (RISCV && 64BIT)
>   	select DMA_OPS_HELPERS
>   	select IOMMU_API
>   	select IOMMU_IOVA