Messages in this thread | | | From | Pavel Tatashin <> | Date | Mon, 15 Feb 2021 14:30:14 -0500 | Subject | Re: [PATCH v2 1/1] arm64: mm: correct the inside linear map boundaries during hotplug check |
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> 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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