Re: [PATCH v2 20/24] iommu: Merge strictness and domain type configs

[John Garry]

On 28/07/2021 16:58, Robin Murphy wrote:
>   
> -config IOMMU_DEFAULT_LAZY
> -	bool "lazy"
> +	  Untrusted devices always use this mode, with an additional layer of
> +	  bounce-buffering such that they cannot gain access to any unrelated
> +	  data within a mapped page.
> +
> +config IOMMU_DEFAULT_DMA_LAZY
> +	bool "Translated - Lazy"
>   	help

Since these are being renamed, can you update the kernel-parameters.txt:


	iommu.strict=	[ARM64, X86] Configure TLB invalidation behaviour


....
		  DMA unmap operations invalidate IOMMU hardware TLBs
		  synchronously.
		unset - Use value of CONFIG_IOMMU_DEFAULT_{LAZY,STRICT}.

					^^^^^

Thanks