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cc734c106e
The way AHCIPortHandler held AHCIPorts and even provided them with physical pages for the ATA identify buffer just felt wrong. To fix this, AHCIPortHandler is not a ref-counted object anymore. This solves the big part of the problem, because AHCIPorts can't hold a reference to this object anymore, only the AHCIController can do that. Then, most of the responsibilities are shifted to the AHCIController, making the AHCIPortHandler a handler of port interrupts only.