From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sterling Windmill Subject: Re: Re: 3525MB RAM Limit Date: Thu, 9 Apr 2009 16:01:11 -0400 (EDT) Message-ID: <725759411.2661239307271437.JavaMail.root@mail.ampx.net> References: <6835906b0904091154m70102e57q7148ed89c1ff3b76@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from mail.ampx.net ([208.64.38.105]:57795 "EHLO mail.ampx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753016AbZDIUBO (ORCPT ); Thu, 9 Apr 2009 16:01:14 -0400 Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.ampx.net (Postfix) with ESMTP id 8303F14884B0 for ; Thu, 9 Apr 2009 16:01:12 -0400 (EDT) Received: from mail.ampx.net ([127.0.0.1]) by localhost (mail.ampx.net [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id AwWAIBzFMFz7 for ; Thu, 9 Apr 2009 16:01:11 -0400 (EDT) Received: from mail.ampx.net (mail.ampx.net [208.64.38.105]) by mail.ampx.net (Postfix) with ESMTP id 85D641488336 for ; Thu, 9 Apr 2009 16:01:11 -0400 (EDT) In-Reply-To: <6835906b0904091154m70102e57q7148ed89c1ff3b76@mail.gmail.com> Sender: kvm-owner@vger.kernel.org List-ID: Is this a problem in the latest (kvm-84) or just in an older version that Fedora 10 provides? ----- Original Message ----- From: "Daniel Scott" To: "Alex Williamson" Cc: "Brian Jackson" , kvm@vger.kernel.org Sent: Thursday, April 9, 2009 2:54:11 PM GMT -05:00 US/Canada Eastern Subject: Re: [kvm] Re: 3525MB RAM Limit Brian, Alex, 2009/4/9 Alex Williamson : > On Thu, 2009-04-09 at 10:39 -0500, Brian Jackson wrote: >> some subjects to look for: >> * Can't boot guest with more than 3585MB when using large pages >> There was a patch from Marcelo that was supposed to fix it. >> * kvm-84 and guests with more than 3536 MB Ram? >> there were suggestions to make sure to use the correct bios and the OP stated >> that upgrading his kernel actually fixed the problem >> >> I could swear there was another one, but maybe I'm thinking of the IRC >> channel. If you are still unable to get it to work, you should reply back with >> more info. Kernel version, KVM version, etc. > > It could also be related to the guest trimming away memory due to the > way we used to report the MTRRs. This would show up in dmesg on the > guest. Try the latest kvm by hand and see if the problem goes away. Thanks for the suggestions. After more research, it looks like upgrading the software will fix the problem: http://www.func.nl/community/knowledgebase/running-kvm-guest-35-gb-ram We see the same BIOS message as in the above link. It seems like this will be fixed in Fedora 11 so we'll probably wait for a month or two and then upgrade Fedora on our host system. Thanks again, Dan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html