From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1Ct2Sk-0007vS-TO for user-mode-linux-devel@lists.sourceforge.net; Mon, 24 Jan 2005 03:32:54 -0800 Received: from nepa.nlc.no ([195.159.31.6] ident=qmailr) by sc8-sf-mx1.sourceforge.net with smtp (Exim 4.41) id 1Ct2Sj-0005KX-7e for user-mode-linux-devel@lists.sourceforge.net; Mon, 24 Jan 2005 03:32:54 -0800 Message-ID: <51673.80.203.0.208.1106566366.squirrel@80.203.0.208> In-Reply-To: <41F4DC94.7030900@fujitsu-siemens.com> References: <267988DEACEC5A4D86D5FCD780313FBB03B12C4B@exch-03.noida.hcltech.com> <200501240111.j0O1BtoI004687@ccure.user-mode-linux.org> <200501240010.23514.rob@landley.net> <41F4DC94.7030900@fujitsu-siemens.com> Subject: Re: [uml-devel] memory From: stian@nixia.no MIME-Version: 1.0 Content-Type: text/plain;charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: Mon, 24 Jan 2005 12:32:46 +0100 (CET) To: Bodo Stroesser Cc: Henrik Nordstrom , Rob Landley , user-mode-linux-devel@lists.sourceforge.net, Jeff Dike , "Vaibhav Sharma, Noida" , Doug Dumitru > Linux needs to have one struct page for each physical mem page, which in > the > simple case of UML are placed in one memmap array. > This array needs to be accessible permanently to the kernel, i.e. it > has to be in low-mem. AFAIK, one struct page is 44 bytes in size, thus the > array is about 1% of the entire physical mem in size. You can mangle with the page-size as-well. You will break some few programs by increasing the page-size too 16K instead of 4K, but most software should respect the output mmap gives it, etc. Stian ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel