Date: Tue, 3 Apr 2007 17:43:08 +0300 From: metadev <metadev@gmail.com> To: freebsd-security@freebsd.org Subject: Re: nx-bit and TPM Message-ID: <323b75e10704030743x46b25c41p6108dce5e93d58a8@mail.gmail.com> In-Reply-To: <20070330100318.wbqww1rilcksskok@webmail.leidinger.net> References: <e318b01b0703291334q1e05eda4y36cdd8a86cb3c597@mail.gmail.com> <86648johpj.fsf@dwp.des.no> <20070330100318.wbqww1rilcksskok@webmail.leidinger.net>
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On 3/30/07, Alexander Leidinger <Alexander@leidinger.net> wrote: > Quoting Dag-Erling Sm=F8rgrav <des@des.no> (from Thu, 29 Mar 2007 > 23:36:24 +0200): > > > Igor <runixd@gmail.com> writes: > >> I'm was looking through handbook and wikipedia and it appears FreeBSD > >> doesn't support hardware (nor software) nx bit. > >> There also doesn't seem to be any support for TPM (Trusted Platform Mo= dule). > > > > I believe NX support was never implemented because Intel's version of > > AMD64 didn't support it. As for TPM, I don't see the point. > > This should not stop us in using it on amd64 if available. I think one > of the problem was/is the lack of time/man-power. So if someone comes > up with a good (enough) implementation which works on our supported > hardware, I don't think it will be rejected. > Please see this post for more info on the implications of using a non-executable stack http://lists.freebsd.org/pipermail/freebsd-security/2005-November/003318.ht= ml Bogdan
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