tree 623b954e7571767c4d5f0581ad8ba6eacd48785d
parent d96eb2c6f480769bff32054e78b964860dae4d56
author Alex Williamson <alex.williamson@redhat.com> 1383152550 -0600
committer Paolo Bonzini <pbonzini@redhat.com> 1383156143 +0100

kvm: Create non-coherent DMA registeration

We currently use some ad-hoc arch variables tied to legacy KVM device
assignment to manage emulation of instructions that depend on whether
non-coherent DMA is present.  Create an interface for this, adapting
legacy KVM device assignment and adding VFIO via the KVM-VFIO device.
For now we assume that non-coherent DMA is possible any time we have a
VFIO group.  Eventually an interface can be developed as part of the
VFIO external user interface to query the coherency of a group.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>