[PATCH v3 1/5] iommu: Add DOMAIN_ATTR_SPLIT_TABLES

Will Deacon will at kernel.org
Thu Jan 9 06:36:47 PST 2020


On Mon, Dec 16, 2019 at 09:37:47AM -0700, Jordan Crouse wrote:
> Add a new attribute to enable and query the state of split pagetables
> for the domain.
> 
> Signed-off-by: Jordan Crouse <jcrouse at codeaurora.org>
> ---
> 
>  include/linux/iommu.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/include/linux/iommu.h b/include/linux/iommu.h
> index f2223cb..18c861e 100644
> --- a/include/linux/iommu.h
> +++ b/include/linux/iommu.h
> @@ -126,6 +126,7 @@ enum iommu_attr {
>  	DOMAIN_ATTR_FSL_PAMUV1,
>  	DOMAIN_ATTR_NESTING,	/* two stages of translation */
>  	DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE,
> +	DOMAIN_ATTR_SPLIT_TABLES,
>  	DOMAIN_ATTR_MAX,
>  };

Acked-by: Will Deacon <will at kernel.org>

Although a comment describing what this does wouldn't hurt.

Will



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