Re: [PATCH 1/1] iommu/vt-d: Select PCI_ATS explicitly

[Will Deacon]

On Wed, May 12, 2021 at 02:53:13PM +0800, Lu Baolu wrote:
> The Intel VT-d implementation supports device TLB management. Select
> PCI_ATS explicitly so that the pci_ats helpers are always available.
> 
> Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
> ---
>  drivers/iommu/intel/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/iommu/intel/Kconfig b/drivers/iommu/intel/Kconfig
> index 28a3d1596c76..7e5b240b801d 100644
> --- a/drivers/iommu/intel/Kconfig
> +++ b/drivers/iommu/intel/Kconfig
> @@ -14,6 +14,7 @@ config INTEL_IOMMU
>  	select SWIOTLB
>  	select IOASID
>  	select IOMMU_DMA
> +	select PCI_ATS
>  	help
>  	  DMA remapping (DMAR) devices support enables independent address
>  	  translations for Direct Memory Access (DMA) from devices.

Acked-by: Will Deacon <will@xxxxxxxxxx>

Will