On 11/23/2015 05:36 PM, Cornelia Huck wrote:
> On Mon, 23 Nov 2015 15:41:11 +0800
> Jason Wang wrote:
>
>> Currently, all virtio devices bypass IOMMU completely. This is because
>> address_space_memory is assumed and used during DMA emulation. This
>> patch converts the virtio core API to use DM
On 11/23/2015 04:06 PM, Michael S. Tsirkin wrote:
> On Mon, Nov 23, 2015 at 03:41:11PM +0800, Jason Wang wrote:
>> Currently, all virtio devices bypass IOMMU completely. This is because
>> address_space_memory is assumed and used during DMA emulation. This
>> patch converts the virtio core API to
On 23 November 2015 at 14:34, Cornelia Huck wrote:
> The mmio transport is a completely different beast; I'm afraid I don't
> know enough about it to say how it interacts with iommus.
Conceptually, it's just a device that does DMA, I think.
You could in theory put it behind an IOMMU, but nobody d
On Mon, 23 Nov 2015 11:52:50 +0200
"Michael S. Tsirkin" wrote:
> On Mon, Nov 23, 2015 at 10:36:45AM +0100, Cornelia Huck wrote:
> > On Mon, 23 Nov 2015 15:41:11 +0800
> > Jason Wang wrote:
> >
> > > Currently, all virtio devices bypass IOMMU completely. This is because
> > > address_space_memor
On Mon, Nov 23, 2015 at 10:36:45AM +0100, Cornelia Huck wrote:
> On Mon, 23 Nov 2015 15:41:11 +0800
> Jason Wang wrote:
>
> > Currently, all virtio devices bypass IOMMU completely. This is because
> > address_space_memory is assumed and used during DMA emulation. This
> > patch converts the virti
On Mon, 23 Nov 2015 15:41:11 +0800
Jason Wang wrote:
> Currently, all virtio devices bypass IOMMU completely. This is because
> address_space_memory is assumed and used during DMA emulation. This
> patch converts the virtio core API to use DMA API. This idea is
>
> - introducing a new transport
On Mon, Nov 23, 2015 at 03:41:11PM +0800, Jason Wang wrote:
> Currently, all virtio devices bypass IOMMU completely. This is because
> address_space_memory is assumed and used during DMA emulation. This
> patch converts the virtio core API to use DMA API. This idea is
>
> - introducing a new trans
Currently, all virtio devices bypass IOMMU completely. This is because
address_space_memory is assumed and used during DMA emulation. This
patch converts the virtio core API to use DMA API. This idea is
- introducing a new transport specific helper to query the dma address
space. (only pci versi
