Pete writes:

[snip]

> Code and Data Pages
>
>This is not an OS feature, it is a hardware feature!  It is a
>feature of the HP3000 and other business servers and
>mainframes.  The Intel CPU's and their clones did not support
>it for a long time, because their CPUs were designed for
>PERSONAL COMPUTERS.  Linux has supported code and data page
>separation for years, though it did intially have some pieces
>that performed some "magic" by executing a data page.  A bit
>of knowledge and/or understanding would be helpful here to
>have an intelligent discussion about this.

I would argue this is 'both' as most implementations have the ability
to limit execution of pages as a kernel enabled feature.

Yes, first the h/w must support it in the native architecture, but the o/s must
usually support the feature.

Any intel/amd server cpu you can get these days has such support and it is
the o/s that must work in concert with the feature to support it.

duane

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