From mboxrd@z Thu Jan 1 00:00:00 1970 From: ANNIE LI Subject: Balloon down memory failed in x86 PAE mode when memory size>4G Date: Mon, 21 Sep 2009 14:42:55 +0800 Message-ID: <4AB7206F.1050901@oracle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Xen-devel List-Id: xen-devel@lists.xenproject.org Hi I implemented balloon in windows pv driver, it works normally on x86 and x64 OS. However, i hit problem to balloon down memory on x86 PAE mode VM when it's memory size is larger than 4G. Furthermore, i tested linux PVHVM too. Balloon driver also failed to take effect at the same situation. So, is there anything missed in windows or linux PV driver when ballooning down memory on x86 PAE VM(memory>4G)? or is there a limitation in Xen for PAE mode? Thanks Annie.