8.58 ECPSVM (ECPS:VM commands)
8.58.1 Function
This command specifies, whether ECPS:VM (Extended Control Program Support : Virtual Machine)
support is to be enabled and – if it is enabled – to which level. Issuing command ECPSVM HELP displays
a list of all available commands.
The purpose of ECPS:VM is to provide to the VM/370 operating system a set of shortcut facilities to per-
form hypervisor functions (CP Assists) and virtual machine simulation (VM Assists).
Although this feature does not affect VM operating system products operating in XA, ESA or z/Architec-
ture mode, it will affect VM/370 and VM/SP products running under VM/XA, VM/ESA or z/VM. Running
VM/370 and VM/SP products under VM/XA, VM/ESA or z/VM should be done with ECPS:VM disabled.
ECPS:VM should not be enabled in AP or MP environments. ECPS:VM has no effect on non-VM opera-
ting systems. It is however recommended to disable ECPS:VM when running native non-VM operating
systems.
If a specific level is given this value will be reported to the operating system when it issues a Store
ECPS:VM level but it does not otherwise alter the ECPS:VM facility operations. Please note that this is a
partial implementation.
Some of the arguments of the ECPSVM command can be abbreviated as shown in the syntax section
below.
8.58.2 Syntax
Descriptive
elp ats able able debug [nn]]
Diagram
¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬§ ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬ÊÍ
elp ¬¬¬¬¬¬¬¬¬¬¬¬¬¬¬«
ats ¬¬¬¬¬¬¬¬¬¬¬¬¬¬«
able ¬¬¬¬¬¬¬¬¬¬¬¬¬«
able ¬¬¬¬¬¬¬¬¬¬¬¬¬¬«
¬¬¬¬¬¬¬¬¬¬¬¬¬«
debug ¬¬¬¬¬¬¬¬¬¬¬¬¬«
¬¬¬§¬¬¬¬¬¬¬¬¬¬«
nn
