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LWN.net comments

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Could this break user space? [LWN.net]
smcv · 2026-06-02 · via LWN.net comments

Could this break user space?

Posted Jun 1, 2026 17:21 UTC (Mon) by smcv (subscriber, #53363)
In reply to: Could this break user space? by tux3
Parent article: Reconsidering x32 — again

> About Wine, I think it ships a new WoW64 mode that can run on a 64bit host without even any 32bit libraries or 32bit syscalls.

It does, but not all Wine builds use it. As far as I know, Proton 11 on x86 still uses 32-bit x86 code to run 32-bit Windows binaries - presumably there were concerns about the WoW64 mode's maturity.