From owner-freebsd-amd64@FreeBSD.ORG Sun Jul 24 07:08:25 2005 Return-Path: X-Original-To: freebsd-amd64@freebsd.org Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id CBF6A16A41F for ; Sun, 24 Jul 2005 07:08:25 +0000 (GMT) (envelope-from pete@he.iki.fi) Received: from rms06.rommon.net (rms06.rommon.net [212.54.5.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 72EE743D46 for ; Sun, 24 Jul 2005 07:08:24 +0000 (GMT) (envelope-from pete@he.iki.fi) Received: from [193.64.42.236] (dyn236.helenius.fi [193.64.42.236]) by rms06.rommon.net (Postfix) with ESMTP id EC2C333C65 for ; Sun, 24 Jul 2005 10:08:22 +0300 (EEST) Message-ID: <42E33E67.7040205@he.iki.fi> Date: Sun, 24 Jul 2005 10:08:23 +0300 From: Petri Helenius User-Agent: Mozilla Thunderbird 1.0.6 (Windows/20050716) X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-amd64@freebsd.org References: <42DFDCCA.8050207@he.iki.fi> <200507210137.29816.peter@wemm.org> <42DFF043.3090203@he.iki.fi> In-Reply-To: <42DFF043.3090203@he.iki.fi> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: kernel memory X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 24 Jul 2005 07:08:25 -0000 BTW, I remember seeing a freebsd memory map somewhere but I'm unable to locate it again. Is there one that has been updated to be valid for the 64 bit platforms? Pete Petri Helenius wrote: > Peter Wemm wrote: > >> >> 2GB for paged kernel memory. But in addition we access memory via >> the direct map area to avoid the need for temporary mappings in many >> cases. uma (malloc, mbufs) etc use this, as does the sfbuf temporary >> mapping system. >> >> >> > So there is no limitation for malloced memory? Say if my driver would > like to have 4 or 8 gig lookup cache that would work? > > Pete > > >