Re: [PATCH v3] iommu: Prevent VMD child devices from being remapping targets

2017-08-30 Thread Bjorn Helgaas
On Wed, Aug 30, 2017 at 03:05:59PM -0600, Jon Derrick wrote: > VMD child devices must use the VMD endpoint's ID as the requester. > Because of this, there needs to be a way to link the parent VMD > endpoint's iommu group and associated mappings to the VMD child devices > such that attaching and

[PATCH v3] iommu: Prevent VMD child devices from being remapping targets

2017-08-30 Thread Jon Derrick
VMD child devices must use the VMD endpoint's ID as the requester. Because of this, there needs to be a way to link the parent VMD endpoint's iommu group and associated mappings to the VMD child devices such that attaching and detaching child devices modify the endpoint's mappings, while