From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:41097) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGCNC-0003md-SL for qemu-devel@nongnu.org; Tue, 27 Jan 2015 15:04:31 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YGCN7-0000BB-Ll for qemu-devel@nongnu.org; Tue, 27 Jan 2015 15:04:30 -0500 Received: from mail-we0-x236.google.com ([2a00:1450:400c:c03::236]:50621) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YGCN7-0000B2-G4 for qemu-devel@nongnu.org; Tue, 27 Jan 2015 15:04:25 -0500 Received: by mail-we0-f182.google.com with SMTP id l61so16894349wev.13 for ; Tue, 27 Jan 2015 12:04:24 -0800 (PST) Received: from crunchbang (100.Red-79-147-38.dynamicIP.rima-tde.net. [79.147.38.100]) by mx.google.com with ESMTPSA id mz10sm11679832wic.9.2015.01.27.12.04.23 for (version=SSLv3 cipher=RC4-SHA bits=128/128); Tue, 27 Jan 2015 12:04:23 -0800 (PST) Date: Tue, 27 Jan 2015 21:04:17 +0100 From: Marc =?UTF-8?B?TWFyw60=?= Message-ID: <20150127210417.3e4704c5@crunchbang> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] VersatilePB bug (or undefined behaviour) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel Hi I was investigating a bit with a versatilepb machine, and I was trying to boot a Linux system with a root file system through NFS. It worked with Linux 3.2, but it didn't work with any later Linux version. This was the error: [ 0.594471] smc91x: not found (-16). [ 0.595555] smc91x: probe of smc91x.0 failed with error -16 (Error -16 is EBUSY). I debugged the error, and I found that the region was being marked as "System RAM". The problem was mine, I specified (because I did not change if from previous boots) 1G as memory for the Versatile machine, which only has 256 MB of RAM Should this be a bug, or is undefined behaviour? I think it is not very difficult to check for the memory the user requests so it can be limited to 256 MB and issue a warning if it is exceeded. Thanks Marc