Re: [PATCH 3/3] iommu: prevent VMD child devices from being remapping targets

2017-08-11 Thread Jon Derrick
Hi Robin, thanks for the reply. On 08/11/2017 12:25 PM, Robin Murphy wrote: > On 07/08/17 20:57, Jon Derrick wrote: >> VMD child devices must use the VMD endpoint's ID as the DMA source. >> Because of this, there needs to be a way to link the parent VMD >> endpoint's DMAR domain to the VMD child d

Re: [PATCH 3/3] iommu: prevent VMD child devices from being remapping targets

2017-08-11 Thread Robin Murphy
On 07/08/17 20:57, Jon Derrick wrote: > VMD child devices must use the VMD endpoint's ID as the DMA source. > Because of this, there needs to be a way to link the parent VMD > endpoint's DMAR domain to the VMD child devices' DMAR domain such that > attaching and detaching child devices modify the e

Re: [PATCH 3/3] iommu: prevent VMD child devices from being remapping targets

2017-08-11 Thread Bjorn Helgaas
On Mon, Aug 07, 2017 at 01:57:13PM -0600, Jon Derrick wrote: > VMD child devices must use the VMD endpoint's ID as the DMA source. > Because of this, there needs to be a way to link the parent VMD > endpoint's DMAR domain to the VMD child devices' DMAR domain such that > attaching and detaching chi