Comment 5 for bug 1841670

For low-latency compute nodes, similar reason caused the 2nd reboot, the isolcpus kernal arg changed during manifest being applied for the initial unlock.

Initial unlock reboot kernel args:
BOOT_IMAGE=/vmlinuz-3.10.0-957.12.2.rt56.929.el7.tis.4.x86_64 root=UUID=e066f9de-e7d5-4691-b340-859ae13a056f ro security_profile=standard module_blacklist=integrity,ima audit=0 tboot=false crashkernel=auto biosdevname=0 console=ttyS0,115200n8 iommu=pt usbcore.autosuspend=-1 selinux=0 enforcing=0 nmi_watchdog=0 softlockup_panic=0 intel_iommu=on user_namespace.enable=1 skew_tick=1 nopti nospectre_v2 hugepagesz=1G hugepages=2 hugepagesz=2M hugepages=0 default_hugepagesz=2M irqaffinity=0,20 rcu_nocbs=1-19,21-39 nohz_full=1-19,21-39 isolcpus=1-2,21-22 kthread_cpus=0,20

final kernel args:
BOOT_IMAGE=/vmlinuz-3.10.0-957.12.2.rt56.929.el7.tis.4.x86_64 root=UUID=e066f9de-e7d5-4691-b340-859ae13a056f ro security_profile=standard module_blacklist=integrity,ima audit=0 tboot=false crashkernel=auto biosdevname=0 console=ttyS0,115200n8 iommu=pt usbcore.autosuspend=-1 selinux=0 enforcing=0 nmi_watchdog=0 softlockup_panic=0 intel_iommu=on user_namespace.enable=1 skew_tick=1 hugepagesz=1G hugepages=2 hugepagesz=2M hugepages=0 default_hugepagesz=2M irqaffinity=0,20 rcu_nocbs=1-19,21-39 nohz_full=1-19,21-39 isolcpus=1-19,21-39 kthread_cpus=0,20 nopti nospectre_v2