[PATCH v2 1/1] arm64: mm: correct the inside linear map boundaries during hotplug check

Pavel Tatashin pasha.tatashin at soleen.com
Mon Feb 15 14:30:14 EST 2021

> Can't we simply use signed arithmetic here? This expression works fine
> if the quantities are all interpreted as s64 instead of u64

I was thinking about that, but I do not like the idea of using sign
arithmetics for physical addresses. Also, I am worried that someone in
the future will unknowingly change it to unsigns or to phys_addr_t. It
is safer to have start explicitly set to 0 in case of wrap.

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