Re: [RFC RESEND PATCH 0/4] hw/arm/virt-acpi-build: Introduce iommu option for pci root bus

[Wang Xingang <wangxingang5@huawei.com>]

Hi, everyone! Do you have any suggestions? Please help review these 
patches, thanks very much.

On 2021/2/27 16:33, Wang Xingang wrote:
> From: Xingang Wang <wangxingang5@huawei.com>
> 
> These patches add support for configure iommu on/off for pci root bus,
> including primary bus and pxb root bus. At present, All root bus will go
> through iommu when iommu is configured, which is not flexible.
> 
> So this add option to enable/disable iommu for primary bus and pxb root bus.
> When iommu is enabled for the root bus, devices attached to it will go
> through iommu. When iommu is disabled for the root bus, devices will not
> go through iommu accordingly.
> 
> Xingang Wang (4):
>    pci: Add PCI_BUS_IOMMU property
>    hw/pci: Add iommu option for pci root bus
>    hw/pci: Add pci_root_bus_max_bus
>    hw/arm/virt-acpi-build: Add explicit idmap info in IORT table
> 
>   hw/arm/virt-acpi-build.c            | 92 +++++++++++++++++++++--------
>   hw/arm/virt.c                       | 29 +++++++++
>   hw/pci-bridge/pci_expander_bridge.c |  6 ++
>   hw/pci/pci.c                        | 35 ++++++++++-
>   include/hw/arm/virt.h               |  1 +
>   include/hw/pci/pci.h                |  1 +
>   include/hw/pci/pci_bus.h            | 13 ++++
>   7 files changed, 153 insertions(+), 24 deletions(-)
>