From owner-freebsd-hackers Fri Aug 3 8:47:11 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from netbank.com.br (garrincha.netbank.com.br [200.203.199.88]) by hub.freebsd.org (Postfix) with ESMTP id 89CB137B407 for ; Fri, 3 Aug 2001 08:47:05 -0700 (PDT) (envelope-from riel@conectiva.com.br) Received: from surriel.ddts.net (2-021.cwb-adsl.brasiltelecom.net.br [200.193.161.21]) by netbank.com.br (Postfix) with ESMTP id 6A60346805; Fri, 3 Aug 2001 12:46:33 -0300 (BRST) Received: from localhost (pgpazk@localhost [127.0.0.1]) by surriel.ddts.net (8.11.4/8.11.2) with ESMTP id f73FkBF23967; Fri, 3 Aug 2001 12:46:37 -0300 Date: Fri, 3 Aug 2001 12:46:10 -0300 (BRST) From: Rik van Riel X-X-Sender: To: Terry Lambert Cc: Julian Elischer , craig , Subject: Re: How to visit physical memory above 4G? In-Reply-To: <3B6A35E4.626983E@mindspring.com> Message-ID: X-spambait: aardvark@kernelnewbies.org X-spammeplease: aardvark@nl.linux.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, 2 Aug 2001, Terry Lambert wrote: > Original poster said he was working on it for Linux, which > means it's not done, which means "not Linux". It's been running for a while now, integrated in the 2.4 kernel. The way Linux manages to avoid the horrors you describe is by simply not letting the kernel use more than its 1GB (or 2GB) of KVA. No special tricks to make the kernel use more memory, let it go on a diet instead. > FWIW, on the "Linux has it, so FreeBSD should have it" > arguments: > > "If all your friends jumped off a cliff..." Fully agreed, but as long as you don't do any weird tricks trying to let the kernel itself use more memory, it's not at all like jumping from a cliff ... Rik -- Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose... http://www.surriel.com/ http://distro.conectiva.com/ Send all your spam to aardvark@nl.linux.org (spam digging piggy) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message