AMD64(Opteron) Hardware + Multilib + Hardened - Experiences?

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Hello all,

my current exercise is to completely rebuild a server, and it was planned to purchase a multiprocessor system again. So I thought about purchasing another Opteron System (2 Opteron dual cores), and put Gentoo with a multilib profile on it, as I did that before without any problems.

The additional difficulty now is, the system is critical for security, so I want a hardened kernel to enforce additional security. Now I read that hardened kernel + amd64 + multilib is experimental, but I was not able to find anyone using it, any experiences, problems, or anything else about it. I guess the combination is simply quite exotic.

Does anyone have experience with this kind of combination, or recommendations for the setup? Would a 32 bit Gentoo be better if security is more important here? And how exactly would it even work to put a 32 bit Gentoo on this hardware?


Thanks a lot in advance for your tips

Chris