https://bugs.winehq.org/show_bug.cgi?id=47883
--- Comment #7 from Shmerl shtetldik@gmail.com --- (In reply to mirh from comment #6)
This is how proton does it. https://github.com/ValveSoftware/wine/commit/ 9de03fa9a529298d698b4be4c380739c68958d00
I guess it becomes kind of a very handy shortcut when you have programs (well, games) starved for virtual memory left and right.. but if bug 44375 was to be fixed then the use case would be just as "niche" as it already is on Windows.
It would be good to upstream that variable override to Wine from Proton. And I doubt such thing can be fixed in a generic fashion as above that will help all use cases. Wine doesn't handle something like overrides with dxvk / vkd3d-proton and such which can have their own RAM needs that differ from how Windows does things. So simply having a switch gives some flexibility for those who need it and it's easier than patching binaries.