VM/ESA 2.4 had QDIO support (in fact it was the last release to have that module delivered with source). 2.3 might have had it, but I can't remember.
I suspect it would work, but can't try it (no longer have a IPLable 2.4 system). From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Kris Buelens Sent: Thursday, March 18, 2010 1:22 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: VM/ESA TCP/IP and VSWITCH To use a VSWITCH, the guest must support QDIO, and I'd be surprised if a that old VM/ESA would know about QDIO
