Messages in this thread | | | Subject | Re: umip: AMD Ryzen 3900X, pagefault after emulate SLDT/SIDT instruction | From | "H. Peter Anvin" <> | Date | Tue, 19 May 2020 17:17:28 -0700 |
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On 2020-05-19 07:38, Andreas Rammhold wrote: > Hi, > > I've been running into a weird problem with UMIP on a current Ryzen > 3900x with kernel 5.6.11 where a process receives a page fault after the > kernel handled the SLDT (or SIDT) instruction (emulation). > > The program I am running is run through WINE in 32bit mode and tries to > figure out if it is running in a VMWare machine by comparing the results > of SLDT against well known constants (basically as shown in the > [example] linked below). >
Extremely weird. What is it expecting to happen -- or rather, what do you *want* it to do?
-hpa
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