korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2025-01-08 14:54:23 +08:00
Code Issues Packages Projects Releases Wiki Activity

cxl/uapi: Add warning on CXL command enum

Browse Source 
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.

Suggested-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20221222-cxl-misc-v4-2-62f701c1cdd1@intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Ira Weiny 2023-02-02 17:04:25 -08:00 committed by Dan Williams
parent 860334e590
commit 11ef026e46
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/uapi/linux/cxl_mem.h
View File

@ -19,6 +19,10 @@
#define CXL_MEM_QUERY_COMMANDS _IOR(0xCE, 1, struct cxl_mem_query_commands)
#define CXL_MEM_SEND_COMMAND _IOWR(0xCE, 2, struct cxl_send_command)
/*
* NOTE: New defines must be added to the end of the list to preserve
* compatibility because this enum is exported to user space.
*/
#define CXL_CMDS \
___C(INVALID, "Invalid Command"), \
___C(IDENTIFY, "Identify Command"), \