Re: [PATCH 2/4] Intel iommu: Speed up processing of theidentity_mapping function

[Chris Wright]

* Mike Travis (travis@xxxxxxx) wrote:
> @@ -2138,6 +2134,7 @@ static int domain_add_dev_info(struct dm
>  	list_add(&info->global, &device_domain_list);
>  	pdev->dev.archdata.iommu = info;

The si_domain is cached right here...can you not use this instead of
adding an iommu impl. specific bit to pci_dev?

>  	spin_unlock_irqrestore(&device_domain_lock, flags);
> +	pdev->is_identity_mapped = (domain == si_domain);
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