This week I attended a vendors presentation of a proposed product. I rather not disclsoe the Vendor nor the product due to any confidentialy agreements.
The Speaker for this presentation did not provide any specific details. However from the presentation I was able to deduce the following (I think). Address Space "A" runs in problem state - key 8. Address Space "A" Issues a Program Call instruction which inturn invokes a Cross Memory Space Switching Routine (in the Vendors Server Space "B"). The PC-ss routine executes in supervisor state, and its only responsibility is to schedule an SRB into the requesting Address Space "A". Now Address Space "A" has an SRB Routing executing in its address space in Supervisor State. Has anyone seen the above Architecture/Technique used ? Is this a commonly used technique ? Paul D'Angelo .............
