SET IPOLL

Purpose

Use the SET IPOLL command to set or reset the IPOLL function in your GCS machine. Only one function may be specified per SET command. During IPL, IPOLL is initially set to OFF.

Operands

IPOLL OFF

Indicates that you do not want GCS to use the IUCV subfunction IPOLL to handle IUCV external interrupts. This is the initial setting.

IPOLL ON

Indicates that you want GCS to use the IUCV subfunction IPOLL to handle IUCV external interrupts and that the virtual machine is capable of handling buffered interrupts. GCS will poll pending replies and messages to provide for more efficient IUCV interrupt handling.

Usage

• Buffering of interrupts may change the sequence of IUCV external interrupts presented to the virtual machine. IUCV functions, such as PURGE and SEVER, that were issued directly to CP may have affected interrupts which are now buffered to GCS. Applications that alter the usual external interrupt sequence may not be able to use the IPOLL subfunction. For additional information, see z/VM: CP Programming Services.

General Information about the SET Command

For usage notes and messages that apply to the SET command, see SET.