[$] VMX virtualization runs afoul of split-lock detection

One of the many features merged for the 5.7 kernel is split-lock detection for the x86 architecture.This feature has encountered a fair amount ofcontroversy over the course of its development, with the result thatthe time between its initial posting and appearance in a released kernelwill end up being over two years. As it happens, there is another hurdlefor split-lock detection even after its merging into the mainline; thisfeature threatens to create problems for a number of virtualizationsolutions, and it's not clear what the solution would be.