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Wine 11 rewrites how Linux runs Windows games at the kernel level, and the speed gains are massive
(www.xda-developers.com)
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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There have been plenty of similar techniques (esync and fsync) in Proton for years. That's basically why the work was started to get this into Wine in the first place.
The way I understand it this is proper support in the kernel and Wine. So you will still get some improvement. But it won't be any way nearly as large as the article suggests.
I bet those patches are already in Proton-GE or at least GE is likely already working on adding them. For Valve's Proton I suspect they will be added for version 11 or 12 at the latest.