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> SATA driver init takes 100 to 200 ms even without a real disk

While it’s a joke, they’re not particularly far from the truth, as noted in a different comment here. They do indeed wait for some parts to respond.

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Would it be possible on multithreaded architectures to have a thread listening for the response, then setting a flag in /proc or somewhere else to indicate that the part is now active? That way, init code that does not depend on that device can continue to run.

2700 ms is 27x further from the truth than 100 ms.

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