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

[VAXman- at SendSpamHere.ORG]

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.

-- 
VAXman- A Bored Certified VMS Kernel Mode Hacker    VAXman(at)TMESIS(dot)ORG

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