| CR4_VME | Virtual 8086 Mode Extensions |
| CR4_PVI | Protected-mode Virtual Interrupts |
| CR4_TSD | Time Stamp Disable |
| CR4_DE | Debugging Extensions |
| CR4_PSE | Page Size Extension |
| CR4_PAE | Physical Address Extension |
| CR4_MCE | Machine Check Exception |
| CR4_PGE | Page Global Enabled |
| CR4_PCE | Performance-Monitoring Counter enable |
| CR4_OSFXSR | Operating system support for FXSAVE and FXRSTOR instructions |
| CR4_OSXMMEXCPT | Operating System Support for Unmasked SIMD Floating-Point Excepions |
| CR4_UMIP | User-Mode Instruction Prevention |
| CR4_VMXE | Virtual Machine Extensions Enable |
| CR4_SMXE | Safer Mode Extensions Enable CR4_FSGSBASE - |
| CR4_PCIDE | PCID Enable |
| CR4_OSXSSAVE | XSAVE and Processor Extended States Enable |
| CR4_SMEP | Supervisor Mode Execution Protection Enable |
| CR4_SMAP | Supervisor Mode Access Prevention Enable |
| CR4_PKE | Protection Key Enable |
| CR4_CET | Control-flow Enforcement Technology |
| CR4_PKS | Enable Protection Keys for Supervisor-Mode Pages |