[Qemu-devel] [v3 0/2] Add VT-d Posted-Interrupts support

[Feng Wu <feng.wu@intel.com>]

VT-d Posted-Interrupts is an enhancement to CPU side Posted-Interrupt.
With VT-d Posted-Interrupts enabled, external interrupts from
direct-assigned devices can be delivered to guests without VMM
intervention when the guest is running in non-root mode.

This patchset uses the new VFIO device attributes KVM_DEV_VFIO_DEVICE
introduced by Eric's vfio patch
"[PATCH v8 00/19] KVM platform device passthrough"

You can find the VT-d Posted-Interrtups Spec. in the following URL:
http://www.intel.com/content/www/us/en/intelligent-systems/intel-technology/vt-directed-io-spec.html

v1->v2:
Enable this feature based on VFIO mechanism

v2->v3:
KVM_DEV_VFIO_DEVICE_POSTING_IRQ --> KVM_DEV_VFIO_DEVICE_POST_IRQ

Feng Wu (2):
  kvm, vfio: Define new VFIO data structure for VT-d Posted-Interrupts.
  kvm, vfio: Update VT-d Posted-Interrupts related information

 hw/misc/vfio.c            |   60 +++++++++++++++++++++++++++++++++++++++++++-
 linux-headers/linux/kvm.h |   10 +++++++
 2 files changed, 68 insertions(+), 2 deletions(-)