[Info-vax] Alpha and no-execute, was: Re: An old VMS vulnerability, was: Re: Calling standards, was: Re:

[Bob Koehler]

In article <00B12E82.B909A350 at SendSpamHere.ORG>,   VAXman-  @SendSpamHere.ORG writes:
> In article <K8CHm0d1l8d6 at eisner.encompasserve.org>, koehler at eisner.nospam.decuserve.org (Bob Koehler) writes:
>>In article <o1ki31$tkb$2 at dont-email.me>, Simon Clubley <clubley at remove_me.eisner.decus.org-Earth.UFP> writes:
>>> 
>>> Did early versions of the Alpha architecture not support no-execute ?
>>
>>   I am not aware of any version that supports it, I don't recall a
>>   place for it in the control bits, but maybe something snuck into
>>   later revisions that didn't catch my attention.
> 
> Alpha *supports* it.  Take a look at most PTEs -- using SDA -- associated with
> code.  However, OpenVMS use of FOE is not.
> 

   Interesting.  I wonder if any of the UNIX on Alpha support it. 
   Somehow I suspect NT on Alpha didn't.