Read one byte from the desired "Physical" IOSpace address.
- macOS 10.2+
The desired address, as returned by IOMemoryDescriptor::getPhysicalSegment.
Data contained at that location
Read one byte from the desired "Physical" IOSpace address. This function allows the developer to read an address returned from any memory descriptor's getPhysicalSegment routine. It can then be used by segmenting a physical page slightly to tag the physical page with its kernel space virtual address.