On 11/29/2016 09:55 PM, Laura Abbott wrote:
> __pa_symbol is the correct API to find the physical address of symbols.
> Switch to it to allow for debugging APIs to work correctly.

But __pa() is correct for symbols. I see how __pa_symbol() might be a little
faster than __pa(), but there is nothing wrong in using __pa() on symbols.

> Other
> functions such as p*d_populate may call __pa internally. Ensure that the
> address passed is in the linear region by calling lm_alias.

Why it should be linear mapping address? __pa() translates kernel image address 
just fine.
This lm_alias() only obfuscates source code. Generated code is probably worse 

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