Date: Wed, 17 Dec 2003 15:44:49 -0800 From: Julian Elischer <julian@vicor.com> To: hackers@freebsd.org Subject: Machines with >= 4GB of RAM Message-ID: <3FE0EA71.10807@vicor.com>
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Obviously for >4GB you need PAE but at one stage it was required that to run with 54GB of ram the kernel base was moved down from the 3GB point (0xc0000000) to the 2GB point (0x80000000) Is this still required? And what is the configuration value to achieve this? I've been trying to thing os search criterea that would retrieve mails that spell this out and searched the handbook, but without too much success. I'm guessing that options KVA_PAGES=512 may be a start, but is it still required, and do I have to change anything else to match it? (where does the Makefile work out where to link the kernel for?) Is a value of 512 enough for a machine with 16GB of RAM? Any hints, (even a better google search string) appreciated. Julian
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