According to [1] it's W xor X. Interpreting that literally suggests that read on... | Hacker News

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		ghswa on Jan 14, 2015 \| parent \| context \| favorite \| on: OpenBSD's kernel gets W^X treatment According to [1] it's W xor X. Interpreting that literally suggests that read only memory is disallowed as well. I'd be surprised if that's actually the case. [1] http://www.openbsd.org/33.html

friendzis on Jan 14, 2015 [–]

Well, I don't believe memory can be unreadable, therefore neither writable nor executable memory is by definition read only

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