> > 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 ?
Each of the elements is common enough and harmless enough (assuming the vendor knows what they're doing). My more basic question is; given that the service provider has provided a space-switch PC for the client address space to call, what was the point of the SRB? There's nothing wrong with it per se, but it just adds more moving parts which on average is less optimal. CC
