[Xen-devel] [PATCH 0/5] Intel Code/Data Prioritization(CDP) feature enabling

[He Chen <he.chen@xxxxxxxxxxxxxxx>]

Hi all,

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, including
extending CBM operation functions and introducing new commands to enable/disable
CDP dynamically. 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 (5):
  x86: detect Intel CDP feature
  x86: Support enable/disable CDP dynamically and get CDP status
  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             |  22 +++
 docs/misc/xl-psr.markdown     |  56 +++++++-
 tools/libxc/include/xenctrl.h |  10 +-
 tools/libxc/xc_psr.c          |  42 +++++-
 tools/libxl/libxl.h           |  12 ++
 tools/libxl/libxl_psr.c       |  64 ++++++++-
 tools/libxl/libxl_types.idl   |   3 +
 tools/libxl/xl.h              |   4 +
 tools/libxl/xl_cmdimpl.c      |  81 +++++++++--
 tools/libxl/xl_cmdtable.c     |  15 ++
 xen/arch/x86/domctl.c         |  33 ++++-
 xen/arch/x86/psr.c            | 309 ++++++++++++++++++++++++++++++++++++------
 xen/arch/x86/sysctl.c         |   9 +-
 xen/include/asm-x86/psr.h     |  26 +++-
 xen/include/public/domctl.h   |   4 +
 xen/include/public/sysctl.h   |   5 +
 16 files changed, 625 insertions(+), 70 deletions(-)

-- 
1.9.1


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel