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Old 24th December 2009
BSDfan666 BSDfan666 is offline
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No not yet, is a unsupported toggle in the code for it.. but multiple developers have stated it's broken for now.

People using amd64 still have the access to a larger virtual address space, although I think it's set to around 8GB or so per process.. for now anyway.

As for the NX bit, OpenBSD has always simulated that on most architectures via W^X.. the introduction of the NX bit on AMD64 just made it simpler.

AFAIK, newer CPU's supporting the NX bit can also make use of it on the i386 platform, I could be wrong though.. they use a different (..slightly more costly) alternative on processors that do not, using a segmentation trick.

A paper by Theo: http://www.openbsd.org/papers/ven05-deraadt/index.html

Last edited by BSDfan666; 24th December 2009 at 09:12 PM.
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