On 2/12/2011 3:05 PM, Edward Jaffe wrote:
On 2/12/2011 2:37 PM, [email protected] wrote:
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 ?
I would think it's very common.
I would like to amend my statement to say that if the SRB runs strictly vendor
product code, then this is a common approach and there are no issues. However,
if the vendor code running in the SRB will invoke CUSTOMER code that would have
otherwise run in problem state, you could be looking at integrity issue.
Furthermore, if the vendor's SRB is enabled for zIIP dispatch via an interface
licensed to the vendor by IBM, then (as I understand it) the vendor is
contractually prohibited from using that interface to cause the execution of
anything other than the vendor's own product to be redirected to or run on a
zIIP.
--
Edward E Jaffe
Phoenix Software International, Inc
831 Parkview Drive North
El Segundo, CA 90245
310-338-0400 x318
[email protected]
http://www.phoenixsoftware.com/
