This message is generated as the early kernel is figuring out what is in
its address space. This range, 0xffxx0000-0xffffffff is where the BIOS
lives in 32 bit address space. None of this matters to the running of
the system. The address space appears to be reserved so the kernel
doesn't allocate it to something else. The message is "frightening" but
little else. It is just as normal as the earlier messages that reported
that it could not be reserved in the iomap either. These early 64 bit
parts were weird and the kernel is reporting as such.
** Changed in: linux (Ubuntu)
Status: Triaged => Invalid
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amd76xrom amd76xrom_init_one(): Unable to register resource
0xffc00000-0xffffffff - kernel bug?
https://bugs.launchpad.net/bugs/39602
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