From owner-freebsd-arch Wed Mar 21 20:26: 9 2001 Delivered-To: freebsd-arch@freebsd.org Received: from gndrsh.dnsmgr.net (GndRsh.dnsmgr.net [198.145.92.4]) by hub.freebsd.org (Postfix) with ESMTP id 29D2C37B71B for ; Wed, 21 Mar 2001 20:26:06 -0800 (PST) (envelope-from freebsd@gndrsh.dnsmgr.net) Received: (from freebsd@localhost) by gndrsh.dnsmgr.net (8.9.3/8.9.3) id UAA72645; Wed, 21 Mar 2001 20:25:29 -0800 (PST) (envelope-from freebsd) From: "Rodney W. Grimes" Message-Id: <200103220425.UAA72645@gndrsh.dnsmgr.net> Subject: Re: remind me again, why is MAXPHYS only 128k ? In-Reply-To: <200103212142.f2LLg1921851@earth.backplane.com> from Matt Dillon at "Mar 21, 2001 01:42:01 pm" To: dillon@earth.backplane.com (Matt Dillon) Date: Wed, 21 Mar 2001 20:25:28 -0800 (PST) Cc: phk@critter.freebsd.dk (Poul-Henning Kamp), mjacob@feral.com, arch@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-arch@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG ... > Perhaps a pages[] array covering the entire kernel VM space would be an > even better solution. 1G / 4K x 4 bytes = 1MB. Not a big deal. Please be carefull about making assumptions that all FreeBSD boxes run with 1G of kernel VM space: real memory = 1073725440 (1048560K bytes) avail memory = 1040474112 (1016088K bytes) Preloaded elf kernel "kernel" at 0x90294000. ^^ --- pmap.h.orig Fri Aug 4 18:31:07 2000 +++ pmap.h Tue Nov 28 14:59:17 2000 @@ -92,9 +92,9 @@ #endif #ifndef NKPDE #ifdef SMP -#define NKPDE 254 /* addressable number of page tables/pde's */ +#define NKPDE 446 /* addressable number of page tables/pde's */ #else -#define NKPDE 255 /* addressable number of page tables/pde's */ +#define NKPDE 447 /* addressable number of page tables/pde's */ #endif /* SMP */ #endif And our next round of machines will probably push this up to 3G of KVA space (yes, we are doing some very large stuff inside the kernel). -- Rod Grimes - KD7CAX @ CN85sl - (RWG25) rgrimes@gndrsh.dnsmgr.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message