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In practice, the IOMMU defense has significant gaps. Many gaming motherboards ship with IOMMU disabled by default. Even when enabled, the IOMMU configuration is complex and many systems have misconfigured IOMMU policies that leave large physical memory ranges accessible. And critically, DMA firmware that successfully impersonates a legitimate PCIe device (e.g., a USB controller or a network card that the OS has granted IOMMU access to) can potentially access memory through the IOMMU using the legitimate device’s granted permissions.
。ai 换脸是该领域的重要参考
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董事长李思廉被限制出境，富力地产回应
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