debugd/share/kernel-features.json

[
  {
        "name": "SpecPageFault",
        "commands": [
                     {
                        "name": "WriteFile",
                        "file": "/proc/sys/vm/speculative_page_fault",
                        "value": "1"
                     }],
        "support_check_commands": [{
                        "name": "FileExists",
                        "file": "/proc/sys/vm/speculative_page_fault"
                     }]
   }
]