Peter is correct. SRB's are standard. Enclaves are standard. So workload that will run on zIIP will also run on a GCP without any change. There is not a requirement to execute the code in a TCB. It's up to the vendor.
For customers without zIIP, the SRB/enclave overhead will make the product more expensive to run. If this overhead makes the software significantly more expensive, then vendors will allow both methods. For other vendors, this may be insignificant (e.g. using a single SRB for the life of the product may be possible which would eliminate a lot of the overhead). Jon Perryman. >________________________________ > From: Peter Relson <rel...@us.ibm.com> > > >>I suspect that every product that exploits zIIPs already does this. >>Vendors cannot count on zIIPs being installed at customer locations. >>If no zIIPs are available, the work must run in TCB mode. Vendor >>products can't just terminate if zIIPs aren't available. >></end extract> > >I suspect the opposite, since it is not true that "if no zIIPs are >available, the work must run in TCB mode". Bob must have been thinking of >something else. > >Thus you are talking about the products having additional code paths to do >things in two different ways, when one way will "work". >If there is sufficient performance justification for having that >additional code, then they likely do have it. > ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
