Messages in this thread | | | Subject | Re: Non-Exec stack patches | From | Andi Kleen <> | Date | Wed, 24 Mar 2004 07:01:40 +0100 |
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Andrew Morton <akpm@osdl.org> writes:
> Which architectures are currently making their pre-page execute permissions > depend upon VM_EXEC? > Would additional arch patches be needed for this?
Yes, they would need some straight forward minor patches e.g. in the 32bit emulation. IA64 would be a candidate I guess.
i386 could do it on NX capable CPUs with PAE kernels (but it would require backporting some fixes from x86-64). However currently it doesn't make much sense because all x86 CPUs that support NX (AMD K8 currently only) support 64bit kernels and people can as well run 64bit kernels.
Doing it on i386 would only make sense if non 64bit capable CPUs ever get NX. I heard VIA may be planning that, but so far there is nothing in their shipping CPUs, so I guess we can skip that for now.
-Andi
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