This series belongs to a list of series that add SVM support for VT-d.
Here we focus on the implementation of PRI support in the IOMMU and on a
PCI-level
API for PRI to be used by virtual devices.
This work is based on the VT-d specification version 4.1 (March 2023).
Here is a link to a GitHub repository where you can find the following elements
:
- Qemu with all the patches for SVM
- ATS
- PRI
- Device IOTLB invalidations
- Requests with already translated addresses
- A demo device
- A simple driver for the demo device
- A userspace program (for testing and demonstration purposes)
https://github.com/BullSequana/Qemu-in-guest-SVM-demo
Clément Mathieu--Drif (8):
pcie: add a helper to declare the PRI capability for a pcie device
pcie: helper functions to check to check if PRI is enabled
pcie: add a way to get the outstanding page request allocation (pri)
from the config space.
pci: declare structures and IOMMU operation for PRI
pci: add a PCI-level API for PRI
intel_iommu: declare PRI constants and structures
intel_iommu: declare registers for PRI
intel_iommu: add PRI operations support
hw/i386/intel_iommu.c | 302 +++++++++++++++++++++++++++++++++
hw/i386/intel_iommu_internal.h | 54 +++++-
hw/pci/pci.c | 37 ++++
hw/pci/pcie.c | 42 +++++
include/exec/memory.h | 65 +++++++
include/hw/pci/pci.h | 45 +++++
include/hw/pci/pci_bus.h | 1 +
include/hw/pci/pcie.h | 7 +-
include/hw/pci/pcie_regs.h | 4 +
system/memory.c | 49 ++++++
10 files changed, 604 insertions(+), 2 deletions(-)
--
2.45.1
