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Re: [PATCH v4 2/8] hw/pxb: Add a bypass iommu property
From: |
Eric Auger |
Subject: |
Re: [PATCH v4 2/8] hw/pxb: Add a bypass iommu property |
Date: |
Wed, 2 Jun 2021 14:18:12 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.1 |
Hi Xingang,
On 5/25/21 5:49 AM, Wang Xingang wrote:
> From: Xingang Wang <wangxingang5@huawei.com>
>
> This add a bypass_iommu property for pci_expander_bridge.
> The property can be used as:
> qemu -device pxb-pcie,bus_nr=0x10,addr=0x1,bypass_iommu=true
>
> Signed-off-by: Xingang Wang <wangxingang5@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Eric
> ---
> hw/pci-bridge/pci_expander_bridge.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/hw/pci-bridge/pci_expander_bridge.c
> b/hw/pci-bridge/pci_expander_bridge.c
> index aedded1064..7112dc3062 100644
> --- a/hw/pci-bridge/pci_expander_bridge.c
> +++ b/hw/pci-bridge/pci_expander_bridge.c
> @@ -57,6 +57,7 @@ struct PXBDev {
>
> uint8_t bus_nr;
> uint16_t numa_node;
> + bool bypass_iommu;
> };
>
> static PXBDev *convert_to_pxb(PCIDevice *dev)
> @@ -255,6 +256,7 @@ static void pxb_dev_realize_common(PCIDevice *dev, bool
> pcie, Error **errp)
> bus->map_irq = pxb_map_irq_fn;
>
> PCI_HOST_BRIDGE(ds)->bus = bus;
> + PCI_HOST_BRIDGE(ds)->bypass_iommu = pxb->bypass_iommu;
>
> pxb_register_bus(dev, bus, &local_err);
> if (local_err) {
> @@ -301,6 +303,7 @@ static Property pxb_dev_properties[] = {
> /* Note: 0 is not a legal PXB bus number. */
> DEFINE_PROP_UINT8("bus_nr", PXBDev, bus_nr, 0),
> DEFINE_PROP_UINT16("numa_node", PXBDev, numa_node, NUMA_NODE_UNASSIGNED),
> + DEFINE_PROP_BOOL("bypass_iommu", PXBDev, bypass_iommu, false),
> DEFINE_PROP_END_OF_LIST(),
> };
>
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