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

Avi Kivity
2010-07-15T17:22:54Z

On 07/15/2010 08:17 PM, Chris Wright wrote:
>
>> For emulated device, it seems like we can ignore ATS completely, no?
>>
> Not if you want to emulate an ATS capable device ;)
>

What I meant was that the whole request translation, invalidate, dma
using a translated address thing is invisible to software. We can
emulate an ATS capable device by going through the iommu every time.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.