The CXL command enum is exported to user space and must maintain backwards compatibility. Add comment that new defines must be added to the end of the list.
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| @@ -19,6 +19,10 @@ · 18 unmodified lines | ||
| 19 | 19 | #define CXL_MEM_QUERY_COMMANDS _IOR(0xCE, 1, struct cxl_mem_query_commands) |
| 20 | 20 | #define CXL_MEM_SEND_COMMAND _IOWR(0xCE, 2, struct cxl_send_command) |
| 21 | 21 | |
| 22 | +/* | |
| 23 | + * NOTE: New defines must be added to the end of the list to preserve | |
| 24 | + * compatibility because this enum is exported to user space. | |
| 25 | + */ | |
| 22 | 26 | #define CXL_CMDS \ |
| 23 | 27 | ___C(INVALID, "Invalid Command"), \ |
| 24 | 28 | ___C(IDENTIFY, "Identify Command"), \ |