Why is the vsyscall64 kernel parameter not present in newer realtime kernels?

Solution Unverified - Updated -

Issue

I'm using the RT kernel 3.8.13-rt27.40.el6rt.x86_64. The parameter kernel.vsyscall64 is mentioned in the Realtime Tuning Guide but it is not present in the kernel anymore.
Is there any reason why it was removed?

Environment

  • Red Hat Enterprise MRG Real Time

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