Re: [Qemu-devel] [PATCH v2] pci: Introduce helper to retrieve a PCI device's DMA address space

[Benjamin Herrenschmidt]

On Fri, 2013-08-09 at 11:40 +0200, Paolo Bonzini wrote:
> (BTW, do you need to enable bus-master DMA on PCI bridges, to do DMA
> for devices sitting on the secondary bus?)

In theory yes though I have seen bridges who ignore it...

Cheers,
Ben.