VM gets reset to grub menu while booting when mce=off is set on kernel commandline.

Solution In Progress - Updated -

Issue

  • System is unable to boot if mce=off is passed to the kernel via command line.
  • VM gets reset at grub prompt and does not complete the boot process.

Environment

  • Red Hat Enterprise Linux 7.6.
  • kernel 3.10.0-957.el7.x86_64 & above.
  • CPU model for guest VM is set to Broadwell-noTSX-IBRS orHaswell-noTSX-IBRS or some other new models of CPU's.

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