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

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

On Thu, Mar 20, 2025 at 01:19:18AM +0800, Jason Chien wrote:
> Ping
> 
> Jason Chien <jason.chien@sifive.com> 於 2025年3月8日週六上午4:40寫道：
> 
>     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
> 
>     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(-)


Hello!
I tagged this for 10.1, as qemu entered code freeze.

>     --
>     2.43.2
> 
>