Lynxeye and to quote from your link
did someone tested
?
However, unconditionally disabling UMIP for virtual-8086 tasks could be exploited by malicious applications. Hence, disabling UMIP for such kind of tasks is allowed only if the kernel parameter 'umip=novm86' is used. Rather than using the more modern clearcpuid=1234 format for the kernel parameters, we use umip={no|novm86}. This is because the former does cannot cover the three configuration states of UMIP.
Code:
umip=novm86
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