On Mon, Nov 15, 2021 at 10:05:44AM +0800, Lu Baolu wrote: > pci_stub allows the admin to block driver binding on a device and make > it permanently shared with userspace. Since pci_stub does not do DMA, > it is safe. If an IOMMU is setup and dma-iommu or friends are not used nothing is unsafe anyway, it just is that IOMMU won't work.. > However the admin must understand that using pci_stub allows > userspace to attack whatever device it was bound to. I don't understand this sentence at all.
