Date: Wed, 17 Aug 2005 01:58:22 +0200 From: Daniel Rock <freebsd@deadcafe.de> To: freebsd-amd64@freebsd.org Subject: Re: 4 GB RAM showing up as 3, BIOS memory hole and all that Message-ID: <43027D9E.7000602@deadcafe.de> In-Reply-To: <43020F08.6070108@samsco.org> References: <20050815125657.A92343@cons.org> <20050815172250.GA32804@troutmask.apl.washington.edu> <20050815183846.A99145@cons.org> <430173BE.4080802@samsco.org> <20050816111428.A24284@cons.org> <43020F08.6070108@samsco.org>
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Scott Long schrieb: > AMD puts the memory controller into the CPU instead of in the > PCI host bridge, so it's much harder to have the two work together > to do the remapping. I believe that there are some Opteron > systems that can do this, though. The gory details are described in AMD's Technical Documentation #26094 (BIOS and Kernel Developer's Guide) http://www.amd.com/us-en/assets/content_type/white_papers_and_tech_docs/26094.PDF in section 3.5.8. Daniel
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