Subject: [Xen-devel] [PATCH 2/8] xen: Make clear that swiotlb and biomerge are dealing with DMA address

From: [email-masked] (David Vrabel)
Date: Tue, 28 Jul 2015 16:52:06 +0100

On 28/07/15 16:02, Julien Grall wrote:
> 
> +/* Pseudo-physical <-> DMA conversion */
> +static inline unsigned long pfn_to_dfn(unsigned long pfn)

Use BFN for bus frame number.  This is the terminology that is used in
the (proposed) pv-iommu hypercall.

David