Re: [PATCH v7 5/5] hw/arm/virt: Let the virtio-iommu bypass MSIs

2020-07-02 Thread Michael S. Tsirkin
On Mon, Jun 29, 2020 at 09:04:04AM +0200, 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

[PATCH v7 5/5] hw/arm/virt: Let the virtio-iommu bypass MSIs

2020-06-29 Thread Eric Auger
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