On Thu, Nov 29, 2018 at 4:52 PM Mika Westerberg
wrote:
>
> A malicious PCI device may use DMA to attack the system. An external
> Thunderbolt port is a convenient point to attach such a device. The OS
> may use IOMMU to defend against DMA attacks.
>
> Recent BIOSes with Thunderbolt ports mark thes
A malicious PCI device may use DMA to attack the system. An external
Thunderbolt port is a convenient point to attach such a device. The OS
may use IOMMU to defend against DMA attacks.
Recent BIOSes with Thunderbolt ports mark these externally facing root
ports with this ACPI _DSD [1]:
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