On Sat, 12 Feb 2011 22:37:56 GMT "[email protected]" <[email protected]> wrote:
:>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 ? Of course. :>Is this a commonly used technique ? Yes. Why do you see this as an issue? The PC routine can pretty much do anything that the SRB will do. -- Binyamin Dissen <[email protected]> http://www.dissensoftware.com Director, Dissen Software, Bar & Grill - Israel Should you use the mailblocks package and expect a response from me, you should preauthorize the dissensoftware.com domain. I very rarely bother responding to challenge/response systems, especially those from irresponsible companies.
