On Thu, 26 Jan 2006 08:38:12 -0500 Walt Farrell <[EMAIL PROTECTED]> wrote:

:>On 1/24/2006 12:48 PM, Binyamin Dissen wrote:
:>> On Tue, 24 Jan 2006 11:08:27 -0600 "Craddock, Chris" <[EMAIL PROTECTED]>
:>> wrote:

:>> :>There are a whole bunch of integrity issues. When you use the official
:>> :>interfaces, the OS keeps you out of the weeds. When you DIY you're on
:>> :>your own. In this particular area, I wouldn't even consider coloring
:>> :>outside the lines. The results can be really ugly and there just isn't
:>> :>any need for it.
 
:>> There is a need, as the AX (via AXSET) is a global address space value. 
 
:>> There is no way (that I can find) to "legally" change the AX for a single 
unit
:>> of work.

:>Why do you need to do that?  What kind of work are you running in that 
:>address space?

I would like a particular unit of work in an address space to un with an AX of
one. That way I can PT rather than schedule an SRB.

Using AXSET will affect all units of work with that current primary.
 
:>> As far as integrity - this is a supervisor state routine and thus all bets 
are
:>> off.

:>That's not true.  As a supervisor state routine doing weird things you 
:>may prevent the system from being able to maintain integrity, but that 
:>merely means that -you- have the responsibility to maintain it.  If you 
:>do not do that properly, you will bear the blame for any system outages 
:>or integrity or security problems that arise.

My point exactly, which is that there is no reason to block a supervisor state
routine from issuing a PT even when not authorized via the AX since it can
manipulate the environment to allow it anyway.

There should be a version of PT which skips that check. Or a way to set the AX
for a particular work unit.

--
Binyamin Dissen <[EMAIL PROTECTED]>
http://www.dissensoftware.com

Director, Dissen Software, Bar & Grill - Israel


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