https://bugs.winehq.org/show_bug.cgi?id=47571
--- Comment #13 from Brendan Shanks bshanks@codeweavers.com --- I think this can be closed, all 5 UMIP instructions are now emulated by the kernel in both 32- and 64-bit processes.
Linux 5.4 added emulation for SGDT, SIDT, and SMSW for 64-bit processes, and Linux 5.10 added emulation for SLDT and STR instructions on both 32- and 64-bit processes.