From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dario Faggioli Subject: Re: [PATCH v7 3/3] tools & docs: add tools and docs support for Intel CDP Date: Wed, 14 Oct 2015 11:08:47 +0200 Message-ID: <1444813727.3009.57.camel@citrix.com> References: <1444726426-10567-1-git-send-email-he.chen@linux.intel.com> <1444726426-10567-4-git-send-email-he.chen@linux.intel.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7812186742188119048==" Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1ZmI3L-0006Hc-PJ for xen-devel@lists.xenproject.org; Wed, 14 Oct 2015 09:08:55 +0000 In-Reply-To: <1444726426-10567-4-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 , xen-devel@lists.xenproject.org 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, chao.p.peng@linux.intel.com, keir@xen.org List-Id: xen-devel@lists.xenproject.org --===============7812186742188119048== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-KAyWluqZo7s6scXFYUBh" --=-KAyWluqZo7s6scXFYUBh Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2015-10-13 at 16:53 +0800, He Chen wrote: > diff --git a/docs/misc/xl-psr.markdown b/docs/misc/xl-psr.markdown > index c32e25c..9b08ee3 100644 > --- a/docs/misc/xl-psr.markdown > +++ b/docs/misc/xl-psr.markdown > @@ -127,6 +127,59 @@ Per domain CBM settings can be shown by: > =20 > `xl psr-cat-show` > =20 > +## Code and Data Prioritization (CDP) > + > +Code and Data Prioritization (CDP) Technology is an extension of > CAT, which > +is available on Intel Broadwell and later server platforms. 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 masks per Class of Service (COS). > + > +CDP can be enabled by adding `psr=3Dcdp` to Xen command line. > + > +When CDP is enabled, > + > + * the CAT masks are re-mapped into interleaved pairs of masks for > data or > + code fetches. > + > + * the range of COS for CAT is re-indexed, with the lower-half of > the COS > + range available for CDP. > + > +CDP allows the OS or Hypervisor to partition cache allocation in a > more > +fine-grained. > "In a more fine-grained" "way"? Or "manner"? (I'm not a native speaker, though, so if that's not the case, sorry for the noise.) Regards, Dario --=20 <> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK) --=-KAyWluqZo7s6scXFYUBh Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEABECAAYFAlYeG58ACgkQk4XaBE3IOsSVkwCgjJI9JWGWdIQpMEMgNp7kfbYQ u4UAnRztX8eP1DBNT8g7Zv/BZrt5mlKH =yPWP -----END PGP SIGNATURE----- --=-KAyWluqZo7s6scXFYUBh-- --===============7812186742188119048== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel --===============7812186742188119048==--