https://bugs.winehq.org/show_bug.cgi?id=33275
--- Comment #21 from Sebastian Lackner sebastian@fds-team.de --- For those that didn't follow the kernel discussion closely: We're currently at revision 4 of this patch.
[1/2] https://patchwork.kernel.org/patch/5013961/ [2/2] https://patchwork.kernel.org/patch/5013971/
As the original patch doesn't fix all syscall paths, and as each change in this area might affect performance, there is a lot of discussion going on. ;)
For those that want to play the game in the meantime and are using an AMD processor, the trick by Michael Müller (comment 19) is the easiest solution. All others will have to compile a kernel with at least patch 1/2 from above applied. Patch 2/2 is optional, but might give some additional performance boost by reducing overhead for context switches.