Re: [PATCH v5 5/5] hw/arm/virt: Let the virtio-iommu bypass MSIs

Hi Peter, On 6/25/20 12:01 PM, Peter Maydell wrote: > On Wed, 24 Jun 2020 at 14:27, Eric Auger wrote: >> >> At the moment the virtio-iommu translates MSI transactions. >> This behavior is inherited from ARM SMMU. The virt machine >> code knows where the guest MSI doorbells are so we can easily >>

Re: [PATCH v5 5/5] hw/arm/virt: Let the virtio-iommu bypass MSIs

On Wed, 24 Jun 2020 at 14:27, Eric Auger wrote: > > At the moment the virtio-iommu translates MSI transactions. > This behavior is inherited from ARM SMMU. The virt machine > code knows where the guest MSI doorbells are so we can easily > declare those regions as VIRTIO_IOMMU_RESV_MEM_T_MSI. With

[PATCH v5 5/5] hw/arm/virt: Let the virtio-iommu bypass MSIs

At the moment the virtio-iommu translates MSI transactions. This behavior is inherited from ARM SMMU. The virt machine code knows where the guest MSI doorbells are so we can easily declare those regions as VIRTIO_IOMMU_RESV_MEM_T_MSI. With that setting the guest will not map MSIs through the IOMMU