From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chao Peng Subject: Re: [PATCH v3 0/4] Intel Code and Data Prioritization (CDP) feature enabling Date: Mon, 14 Sep 2015 17:48:39 +0800 Message-ID: <20150914094839.GE4475@pengc-linux.bj.intel.com> References: <1442201227-8610-1-git-send-email-he.chen@linux.intel.com> Reply-To: Chao Peng Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ZbQR4-00032b-1m for xen-devel@lists.xenproject.org; Mon, 14 Sep 2015 09:52:30 +0000 Content-Disposition: inline In-Reply-To: <1442201227-8610-1-git-send-email-he.chen@linux.intel.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: He Chen Cc: wei.liu2@citrix.com, ian.campbell@citrix.com, stefano.stabellini@eu.citrix.com, andrew.cooper3@citrix.com, ian.jackson@eu.citrix.com, jbeulich@suse.com, xen-devel@lists.xenproject.org, keir@xen.org List-Id: xen-devel@lists.xenproject.org On Mon, Sep 14, 2015 at 11:27:03AM +0800, He Chen wrote: > Changes in v3: > - x86: remove redundant CDP field in cat_socket_enable (suggested by Chao) > - tools: simplify CBM setting function in tools (suggested by Jan) > - docs: Add boot parameter description (suggested by Chao & Ian) > - code style > > > Changes in v2: > - x86: Enable CDP by boot parameter instead of enabling/disabling CDP at > runtime (suggested by Andrew) > - tools: remove psr-cat-cdp-enable/disable xl commands > - code style > > Code/Data Prioritization(CDP) is offered in Intel Broadwell and later server > platforms, which is an extension of CAT. CDP enables isolation and separate > prioritization of code and data fetches to the L3 cache in a software > configurable manner, which can enable workload prioritization and tuning of > cache capacity to the characteristics of the workload. CDP extends Cache > Allocation Technology (CAT) by providing separate code and data capacity bit > masks(CBM) per Class of Service (COS). CDP is used on VM basis in the Xen > implementation. > > More information about CDP, please refer to Intel SDM, Volumn 3, section 17.16 > http://www.intel.com/content/dam/www/public/us/en/documents/manuals/64-ia-32-architectures-software-developer-manual-325462.pdf > > This patch series enables CDP feature in Xen based on CAT code, and extends > CBM operation functions to support CDP. For all the changes, please see in > each patch. > > This patchset has been tested on Intel Broadwell server platform. > > To make this patchset better, any comment or suggestion is welcomed, I would > really appreciate it. > > Thanks > > He Chen (4): > x86: Support enable CDP by boot parameter and add get CDP status The subject can simply be: x86: detect and initialize CDP (Code/Data Prioritization) feature Chao > x86: add domctl cmd to set/get CDP code/data CBM > tools: add tools support for Intel CDP > docs: add document to introduce CDP command > > docs/man/xl.pod.1 | 14 +++ > docs/misc/xen-command-line.markdown | 8 +- > docs/misc/xl-psr.markdown | 42 ++++++- > tools/libxc/include/xenctrl.h | 7 +- > tools/libxc/xc_psr.c | 17 ++- > tools/libxl/libxl.h | 1 + > tools/libxl/libxl_psr.c | 20 ++- > tools/libxl/libxl_types.idl | 3 + > tools/libxl/xl_cmdimpl.c | 49 ++++++-- > tools/libxl/xl_cmdtable.c | 3 + > xen/arch/x86/domctl.c | 32 ++++- > xen/arch/x86/psr.c | 240 +++++++++++++++++++++++++++++------- > xen/arch/x86/sysctl.c | 5 +- > xen/include/asm-x86/msr-index.h | 3 + > xen/include/asm-x86/psr.h | 23 +++- > xen/include/public/domctl.h | 4 + > xen/include/public/sysctl.h | 2 + > 17 files changed, 399 insertions(+), 74 deletions(-) > > -- > 1.9.1 > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel