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Intel Descriptor parser needs an update to support modern Intel images #486

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@NikolajSchlej

@bird-dancer in #485 provided an image with a new IPSE region, that exposed an issue with the current descriptor parser, needs to be improved to support this new kind of descriptor:

  • check if it's now 4k in size instead of 1k before
  • fix the issue with access right bits showing "free-for-all" for every region
  • add support new region types and offsets
  • find the correct offset of VSCC table
  • etc.

Once this is done, support for IPSE region parsing from #485 can be added correctly.

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