Re: [Qemu-devel] Re: [RFC PATCH 4/7] ide: IOMMU support

[Joerg Roedel]

On Thu, Jul 15, 2010 at 08:02:05PM +0300, Avi Kivity wrote:

> For emulated device, it seems like we can ignore ATS completely, no?

An important use-case for emulation is software testing and caching of
iommu's is an important part that needs to be handled in software. For
this purpose it makes sense to emulate the behavior of caches too. So we
probably should not ignore the possibility of an emulated ATS device
completly.

                Joerg