Re: [Xen-devel] [PATCH v2 0/4] Intel Code/Data Prioritization(CDP) feature enabling
On Wed, Sep 09, 2015 at 01:16:44PM +0800, He Chen wrote: > Changes in v2: > - x86: Enable CDP by boot parameter instead of enabling/disabling CDP at > runtime (suggested by Andrew) As you added a new boot option, you also need a patch for docs/misc/xen-command-line.markdown. Chao > - 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 > 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/xl-psr.markdown | 44 +++- > tools/libxc/include/xenctrl.h | 7 +- > tools/libxc/xc_psr.c| 17 ++- > tools/libxl/libxl.h | 10 ++ > tools/libxl/libxl_psr.c | 32 +- > tools/libxl/libxl_types.idl | 3 + > tools/libxl/xl.h| 2 + > tools/libxl/xl_cmdimpl.c| 52 +++-- > tools/libxl/xl_cmdtable.c | 5 + > xen/arch/x86/domctl.c | 32 +- > xen/arch/x86/psr.c | 237 > > 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, 420 insertions(+), 72 deletions(-) > > -- > 1.9.1 > > > ___ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH v2 0/4] Intel Code/Data Prioritization(CDP) feature enabling
On Wed, 2015-09-09 at 15:37 +0800, Chao Peng wrote: > On Wed, Sep 09, 2015 at 01:16:44PM +0800, He Chen wrote: > > Changes in v2: > > - x86: Enable CDP by boot parameter instead of enabling/disabling CDP > > at > > runtime (suggested by Andrew) > > As you added a new boot option, you also need a patch for > docs/misc/xen-command-line.markdown. FYI this is (usually) best done in the patch which adds the option, rather than in a separate patch. Ian. ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
[Xen-devel] [PATCH v2 0/4] Intel Code/Data Prioritization(CDP) feature enabling
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 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/xl-psr.markdown | 44 +++- tools/libxc/include/xenctrl.h | 7 +- tools/libxc/xc_psr.c| 17 ++- tools/libxl/libxl.h | 10 ++ tools/libxl/libxl_psr.c | 32 +- tools/libxl/libxl_types.idl | 3 + tools/libxl/xl.h| 2 + tools/libxl/xl_cmdimpl.c| 52 +++-- tools/libxl/xl_cmdtable.c | 5 + xen/arch/x86/domctl.c | 32 +- xen/arch/x86/psr.c | 237 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, 420 insertions(+), 72 deletions(-) -- 1.9.1 ___ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
