[Bug 235876] ACPI related commit r330133 broke Microsoft Hyper-V passthrough device on Generation 2 FreeBSD VM

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235876

--- Comment #3 from John Baldwin <jhb at FreeBSD.org> ---
Hmm, so I rechecked the spec and while it does say that bit 0 is ignored, the
spec also includes QWordMemory which explicitly mentions the producer/consumer
flag (e.g. 19.6.111).  Andrew, do you have the acpidump of the Cavium box that
was affected by this?  It seems it was setting a reserved bit and relying on
that reserved bit being ignored, whereas in this case Hyper-V and is setting
the bit and relying on it being treated the same as it would be treated for
other resource types?  Both are undefined behavior, but the Cavium behavior
seems to be more weird (setting a reserved bit and hoping it is ignored). 
Perhaps we can put '#ifdef __arm64__' around the res->Type part of the check?

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