On Wed, Mar 11, 2020 at 02:01:07PM +0100, Pavel Machek wrote: > We don't really need to do this computation on pa, it would work on va > as well, right? It does not matter much, but old code worked that way. > > Plus, strictly speaking, pa + size can overflow for huge sizes, and > test will return false negatives. This is 64-bit code, overflow would need pa + size to be bigger than 2^64, and even then a false negative would need size to be around 2^64.