From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olaf Hering Subject: fixed location of share info page in HVM guests Date: Mon, 27 Aug 2012 19:55:05 +0200 Message-ID: <20120827175504.GA13051@aepfle.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org Recently I tried to move the shared_info page in the pvops kernel during shutdown, see "xen PVonHVM: move shared_info to MMIO before kexec" patch. But this change was reverted because it caused reboot failures because the actual moving of the shared page is fragile. So my question is what can be done about it? Right now the shared_info page is in the middle of the RAM and will be overwritten during kexec because its area is not reserved. Can the toolstack help to provide a reserved page which can then be used by the kernel? Olaf