Re: [RFC PATCH v2] vfio: Include No-IOMMU mode

2015-10-15 Thread Stephen Hemminger
On Wed, 14 Oct 2015 15:51:18 -0600 Alex Williamson wrote: > There is really no way to safely give a user full access to a DMA > capable device without an IOMMU to protect the host system. There is > also no way to provide DMA translation, for use cases such as device > assignment to virtual mach

Re: [RFC PATCH v2] vfio: Include No-IOMMU mode

2015-10-15 Thread Michael S. Tsirkin
On Wed, Oct 14, 2015 at 03:51:18PM -0600, Alex Williamson wrote: > There is really no way to safely give a user full access to a DMA > capable device without an IOMMU to protect the host system. There is > also no way to provide DMA translation, for use cases such as device > assignment to virtual