I'm not talking about generic hardware questions (e.g. how Linux names a disk device), I'm talking about the handling of very specific hardware details and interactions<sup>1</sup>.

The main problem I see is that the level of knowledge required to answer these questions is the same of somebody *programming* an LKM, or directly the kernel, to control said hardware details and interactions. 

I'm not sure if this community accepts such questions as on topic.

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<sup>1</sup> To contextualise, I'm willing to ask a question about MMIO remapping for the devices behind a node's local PCIe interface on a NUMA system. Particularly the interactions with Source Address Decoders, the SRAT ACPI table and Linux behaviour for cross-node IO requests.