I owe this an updated set of tests. Life has been busy of late.
With the research I did on the 68060 mask revs earlier in the year, and the known errata in the Rev 1 and Rev 5 (For the readers: Superscalar in the former, Load/Store Buffer Bypass in both) masks, you might look to check the PCR values, and have the option handy to disable those modes when those specific masks are encountered. This may give you the means to identify situations where people report instability, but may not have the tools, or understanding, to identify their chip rev/mask - not to mention fakes/relabeled chips they may have bought.
Maybe do the errata test/make the issue known only if a verbose output is desired, and also an ErrataPatch option to test and set the PCR appropriately if the user wants it.
For anyone reading this, the Ralph Babel v2.3 68060.library (for GVP/TekMagic) and the MuLibs 68060.library (Generic) were both updated in 2018 to address the Rev 5 68060 mask errata that was not identified in all earlier 68060.library revisions tested. They are the only 68060 CPU libraries to properly identify the later (but not last) masks, and set the appropriate mode(s) off. None of the other libraries have current support as of 2018 that I am aware of. This includes the 1999/2000 P5 68060.libraries. They are needed for P5 hardware, and popular/compatible for use with some modified hardware, like the A3640/A3660. The archive of the P5 libraries/tools CPU060 tool warns of messing with the modes (after their library sets them) if not knowing the results, but it's information prior to knowing about the Rev 5 mask, apparently. Some users chose to enable the library-disabled modes, thinking they should all be enabled, but then invite obscure stability problems, particularly with DMA and Shared RAM activities.