From: Chao Peng <chao.p.peng@linux.intel.com>
To: He Chen <he.chen@linux.intel.com>
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
Subject: Re: [PATCH v3 0/4] Intel Code and Data Prioritization (CDP) feature enabling
Date: Mon, 14 Sep 2015 17:48:39 +0800 [thread overview]
Message-ID: <20150914094839.GE4475@pengc-linux.bj.intel.com> (raw)
In-Reply-To: <1442201227-8610-1-git-send-email-he.chen@linux.intel.com>
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
prev parent reply other threads:[~2015-09-14 9:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-14 3:27 [PATCH v3 0/4] Intel Code and Data Prioritization (CDP) feature enabling He Chen
2015-09-14 3:27 ` [PATCH v3 1/4] x86: Support enable CDP by boot parameter and add get CDP status He Chen
2015-09-14 8:39 ` Chao Peng
2015-09-14 14:12 ` Jan Beulich
2015-09-14 3:27 ` [PATCH v3 2/4] x86: add domctl cmd to set/get CDP code/data CBM He Chen
2015-09-14 9:04 ` Chao Peng
2015-09-14 14:28 ` Jan Beulich
2015-09-14 3:27 ` [PATCH v3 3/4] tools: add tools support for Intel CDP He Chen
2015-09-14 9:11 ` Chao Peng
2015-09-14 3:27 ` [PATCH v3 4/4] docs: add document to introduce CDP command He Chen
2015-09-14 9:35 ` Chao Peng
2015-09-14 9:48 ` Chao Peng [this message]
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