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In a CC > > case that would unplug it from the VM which is not right. > > vdevice is not directly seen by the guest, is not it? The guest will > see, for example, an "AMD IOMMU" and assume there is device table > for all 64K devices, and so on, it is QEMU which will be > reallocating vdevice in the host's IOMMUFD. Did I miss something > here? Thanks, I imagined the vdevice would trigger the CC call to create the vPCI function in the guest attached to the secure iommu. At least some arches will need something like that. The "AMD IOMMU" I expected to be created by the viommu object. Jason