[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] 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@xxxxxxxxxxxxx > http://lists.xen.org/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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