Re: [PATCH 0/4] Integrate IOMMUs with PCI hosts that have ATUs

["Michael S. Tsirkin" <mst@redhat.com>]

On Sat, Mar 08, 2025 at 04:39:33AM +0800, Jason Chien wrote:
> The struct PCIIOMMUOps is designed for use by an IOMMU, but many PCI hosts
> also utilize it to implement their ATUs, preventing coexistence with IOMMUs.
> Overwriting a PCI host’s PCIIOMMUOps disrupts its translation rules.
> 
> This patch series introduces a mechanism to route inbound transactions from
> PCI hosts to the IOMMU, enabling proper integration.
> 
> The final patch depends on another patch series:
> https://lists.nongnu.org/archive/html/qemu-riscv/2025-03/msg00003.html


PCI things:

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>


given the dependency, pls merge through risc-v tree.

> Jason Chien (4):
>   include/hw/pci: Introduce a callback to set the downstream mr of PCI
>     hosts
>   hw/pci: Introduce an API to set PCI host downstream mr for IOMMU
>     integration
>   hw/pci-host/designware: Implement PCIIOMMUOps.set_downstream_mr()
>   hw/riscv/riscv-iommu: Connect the IOMMU with PCI hosts that have ATUs
> 
>  hw/pci-host/designware.c         | 18 +++++++++++++++---
>  hw/pci/pci.c                     |  8 ++++++++
>  hw/riscv/riscv-iommu.c           | 15 ++++++++++-----
>  include/hw/pci-host/designware.h |  2 ++
>  include/hw/pci/pci.h             | 21 +++++++++++++++++++++
>  5 files changed, 56 insertions(+), 8 deletions(-)
> 
> -- 
> 2.43.2