Re: [Qemu-devel] Re: [PATCH 2 of 5] add can_dma/post_dma for direct IO

[Paul Brook]

> The generic resolving API should look something like
>
> int (*resolve)(target_phys_addr_t address_in, target_phys_addr_t
> length_in, target_phys_addr_t &address_out, target_phys_addr_t
> &length_out)

I don't think this is sufficient. A paged iommu may split a single range into 
multiple disjoint sections. i.e. we need SG lists.

Paul