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Not having a central controller multiple subsystem vendors would have to cooperate using an agreed DMA communication protocol to monitor you and send the inform
by j_coder 9y ago
Not having a central controller multiple subsystem vendors would have to cooperate using an agreed DMA communication protocol to monitor you and send the information back using the wifi/ethernet chip. Possible but unlikely.
- jnwatson 9y agoThe DMA communication protocol is already defined. It is part of PCIExpress.
- walterbell 9y agoOn the iMac Pro, will PCI devices be able to DMA into both the Intel and ARM CPUs? Is there a single IOMMU which will arbitrate DMA for both CPUs?
- jnwatson 9y agoThe IOMMU functionality is built into the Platform Controller Hub, which is between the baseboard management controller (the ARM) and the main processor. Theoretically it would be possible to prevent DMA between the two, but it is highly doubtful Apple would program it that way.