[Qemu-devel] [RFC PATCH v1 0/2] VFIO: add VT-d Posted-Interrupts support

[Feng Wu]

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 guest is running in non-root mode.

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

This patch adds VT-d Posted-Interrrupts supports for MSI/MSI-X of assigned
devices. When guests updates MSI/MSIx for assigned devices, QEMU will notify
KVM to update the associated IRTE according to VT-d PI Spec.

Feng Wu (2):
  linux-headers: Update KVM headers
  x86: 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(-)