Hello, I'm investigating if there is a need to backport x86/pkeys fix/feature into earlier kernel versions, Chrome is starting to use PKEY in x86, and I hope experts here can give advice on this. For background, ChromeOS regularly syncs with upstream kernel versions, and has production that uses 4.4/4.14/4.19/5.4/5.10/5.15. We plan to use PKEY as Stephen Röttger proposed in https://docs.google.com/document/d/1O2jwK4dxI3nRcOJuPYkonhTkNQfbmwdvxQMyXgeaRHo/edit?usp=sharing In short, Chrome will use PKEY to protect a thread and have exclusive access to some pages. If there are fixes/features to make this happen, we can backport those from the ChromeOS branch. Thanks! Best regards, Jeff
