From mboxrd@z Thu Jan 1 00:00:00 1970 From: Konrad Rzeszutek Wilk Subject: Re: [PATCH v11 4/9] x86: detect and initialize Platform QoS Monitoring feature Date: Fri, 20 Jun 2014 13:35:55 -0400 Message-ID: <20140620173555.GL19876@laptop.dumpdata.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Dongxiao Xu Cc: keir@xen.org, Ian.Campbell@citrix.com, stefano.stabellini@eu.citrix.com, George.Dunlap@eu.citrix.com, andrew.cooper3@citrix.com, Ian.Jackson@eu.citrix.com, xen-devel@lists.xen.org, JBeulich@suse.com, dgdegra@tycho.nsa.gov List-Id: xen-devel@lists.xenproject.org On Fri, Jun 20, 2014 at 10:31:45PM +0800, Dongxiao Xu wrote: > Detect platform QoS feature status and enumerate the resource types, > one of which is to monitor the L3 cache occupancy. > > Also introduce a Xen grub command line parameter to control the > QoS feature status. > > Signed-off-by: Dongxiao Xu > --- > docs/misc/xen-command-line.markdown | 7 +++ > xen/arch/x86/Makefile | 1 + > xen/arch/x86/pqos.c | 122 ++++++++++++++++++++++++++++++++++++ > xen/arch/x86/setup.c | 3 + > xen/include/asm-x86/cpufeature.h | 1 + > xen/include/asm-x86/pqos.h | 48 ++++++++++++++ > 6 files changed, 182 insertions(+) > create mode 100644 xen/arch/x86/pqos.c > create mode 100644 xen/include/asm-x86/pqos.h > > diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown > index a7ac53d..542eee5 100644 > --- a/docs/misc/xen-command-line.markdown > +++ b/docs/misc/xen-command-line.markdown > @@ -840,6 +840,13 @@ This option can be specified more than once (up to 8 times at present). > ### ple\_window > > `= ` > > +### pqos (Intel) > +> `= List of ( | pqos_monitor: | rmid_max: )` > + > +> Default: `pqos=1,pqos_monitor:1,rmid_max:255` > + > +Configure platform QoS services. Could you elaborate a bit more about them please? and perhaps also specify what kind of CPUs can use this?