code: func (hv *KvmHypervisor) InitKernelParams(isDebug bool) {
  	hv.KernelParams = append(hv.KernelParams, []string{
  		"console=hvc0",
  		"init=/usr/lib/systemd/systemd",
  		"no_timer_check",
  		"noreplace-smp",
  		"tsc=reliable"}...)
  
  	if isDebug {
  		hv.KernelParams = append(hv.KernelParams, []string{
  			"debug",
  			"systemd.log_level=debug",
  			"systemd.show_status=true",
  		}...)
  	} else {
  		hv.KernelParams = append(hv.KernelParams, []string{
  			"systemd.show_status=false",
  			"systemd.log_target=null",
  			"rd.udev.log-priority=3",
  			"quiet=vga",
  			"quiet systemd.log_level=emerg",
  		}...)
  	}
  
  	customKernelParams := os.Getenv("RKT_HYPERVISOR_EXTRA_KERNEL_PARAMS")
  	if customKernelParams != "" {
  		hv.KernelParams = append(hv.KernelParams, customKernelParams)
  	}
  }
docs: // InitKernelParams sets debug and common parameters passed to the kernel