[Qemu-devel] [for-4.2 PATCH 0/2] PCI DMA alias support

[Alex Williamson]

Please see patch 1/ for the motivation and utility of this series.
This v1 submission improves on the previous RFC with revised commit
logs, comments, and more testing, and the missing IVRS support for DMA
alias ranges is now included.  Testing has been done with Linux guests
with both SeaBIOS and OVMF with configurations of intel-iommu and
amd-iommu.  Intel-iommu testing includes device assignment, amd-iommu
is necessarily limited to emulated devices with interrupt remapping
disabled and iommu=pt in the guest (enabling interrupt remapping or
disabling guest passthrough mode fails to work regardless of this
series).  This series is NOT intended for QEMU v4.1.  Thanks,

Alex

---

Alex Williamson (2):
      pci: Use PCI aliases when determining device IOMMU address space
      hw/i386: AMD-Vi IVRS DMA alias support


 hw/i386/acpi-build.c |  127 +++++++++++++++++++++++++++++++++++++++++++++++---
 hw/pci/pci.c         |   43 ++++++++++++++++-
 2 files changed, 160 insertions(+), 10 deletions(-)