z/VM: CP Commands and Utilities Reference - z/VM - IBM

Responses
Note: Unless you specify the ENABLE operand of the DEFINE DIAGNOSE
command, the new DIAGNOSE code is initially in a disabled state after
being defined.
5. To activate a new DIAGNOSE code after defining it, use the ENABLE
DIAGNOSE command (page 429).
6. To change the definition of an existing DIAGNOSE code after initialization, use
the MODIFY DIAGNOSE command (page 615).
7. Once defined, a DIAGNOSE code cannot be deleted. It may be altered in
various appropriate ways, but it remains in existence until a SHUTDOWN or
RESTART IPL is done.
8. To display information about a DIAGNOSE code (status, entry point name, and
privilege class), use the QUERY DIAGNOSE command (page 779).
9. To display the real address of the CP DIAGNOSE code table block for a
DIAGNOSE code, use the LOCATE DGNBK command (page 533).
10. To remove the DIAGNOSE processing code from CP’s system execution
space, use the CPXUNLOAD command (page 107).
11. Many external security managers (ESMs) do not support DIAGNOSE codes
above X'03FC'. For this reason, CP does not support DIAGNOSE codes above
X'03FC'. The DIAGNOSE codes between X'0000' and X'03FC' are divided as
follows:
X'0000' to X'00FC'
Reserved for IBM use
X'0100' to X'01FC'
Reserved for customer use
X'0200' to X'03FC'
Reserved for IBM use.
12. For more information about user-defined DIAGNOSE codes, see the z/VM: CP
Exit Customization book.
Response 1 (Disable One):
To disable DIAGNOSE code X'100', enter the following:
disable diagnose 100
Ready;
After CP finishes processing this command, any virtual machine that issues
DIAGNOSE code X'100' receives a program specification exception in that virtual
machine.
Response 2 (Disable All):
To disable all DIAGNOSE codes on your system, enter the following:
disable diagnose all
Ready;
Response 3 (Disable All Local):
To disable all locally-defined DIAGNOSE codes, enter the following:
disable diagnose 100-1fc
Ready;
Response 4 (Disable Almost All Local):
DISABLE DIAGNOSE
Chapter 2. CP Commands 267