From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xudong Hao Subject: [PATCH 0/4] xen: enable EPT A/D bit feature Date: Tue, 19 Jun 2012 14:28:22 +0800 Message-ID: <1340087306-6096-1-git-send-email-xudong.hao@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: 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 Cc: keir@xen.org, xiantao.zhang@intel.com, JBeulich@suse.com List-Id: xen-devel@lists.xenproject.org Extended Page Tables introduce two bit: access bit and dirty bit, A/D bits enable VMMs to efficiently implement memory management and page classification algorithms to optimize VM memory operations. This series of patches enable EPT dirty bit feature for guest live migration. PATCH 1/4: Add EPT A/D bits definitions. PATCH 2/4: Add xen parameter to control A/D bits support, it on by default. PATCH 3/4: Introduce a log_dirty new function update_dirty_bitmap, which will only update the log dirty bitmap, but won't clear the EPT page dirty bit. The function is used by live migration peek round with EPT D bit supported. PATCH 4/4: enable EPT dirty bit for guest live migration.