Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-02 Thread Jan Beulich
>>> Meng Xu 09/02/15 4:57 AM >>> >2015-09-01 22:31 GMT-04:00 Chao Peng : >> On Tue, Sep 01, 2015 at 09:51:57PM -0400, Meng Xu wrote: >>> Hi Andrew and Chao, >>> >>> [Important things go first] It turns out my machine (Intel E5-2618L >>> v3) does have CAT capability! >>> Xen gives the false alarm t

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Meng Xu
2015-09-01 22:31 GMT-04:00 Chao Peng : > On Tue, Sep 01, 2015 at 09:51:57PM -0400, Meng Xu wrote: >> Hi Andrew and Chao, >> >> [Important things go first] It turns out my machine (Intel E5-2618L >> v3) does have CAT capability! >> Xen gives the false alarm that my machine does not have it. This >>

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Chao Peng
On Tue, Sep 01, 2015 at 09:51:57PM -0400, Meng Xu wrote: > Hi Andrew and Chao, > > [Important things go first] It turns out my machine (Intel E5-2618L > v3) does have CAT capability! > Xen gives the false alarm that my machine does not have it. This > should be a bug, IMO. :-) Even some Haswell S

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Meng Xu
2015-09-01 21:47 GMT-04:00 Chao Peng : > On Tue, Sep 01, 2015 at 10:42:57AM -0400, Meng Xu wrote: >> 2015-09-01 10:30 GMT-04:00 Andrew Cooper : >> > On 01/09/15 15:20, Meng Xu wrote: >> >> 2015-09-01 9:04 GMT-04:00 Andrew Cooper : >> >>> On 01/09/15 13:55, Meng Xu wrote: >> 2015-09-01 1:47 GMT

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Chao Peng
On Tue, Sep 01, 2015 at 10:42:57AM -0400, Meng Xu wrote: > 2015-09-01 10:30 GMT-04:00 Andrew Cooper : > > On 01/09/15 15:20, Meng Xu wrote: > >> 2015-09-01 9:04 GMT-04:00 Andrew Cooper : > >>> On 01/09/15 13:55, Meng Xu wrote: > 2015-09-01 1:47 GMT-04:00 Chao Peng : > > On Mon, Aug 31, 201

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Meng Xu
Hi Andrew and Chao, [Important things go first] It turns out my machine (Intel E5-2618L v3) does have CAT capability! Xen gives the false alarm that my machine does not have it. This should be a bug, IMO. :-) 2015-09-01 10:42 GMT-04:00 Meng Xu : > 2015-09-01 10:30 GMT-04:00 Andrew Cooper : >> On

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Meng Xu
2015-09-01 10:30 GMT-04:00 Andrew Cooper : > On 01/09/15 15:20, Meng Xu wrote: >> 2015-09-01 9:04 GMT-04:00 Andrew Cooper : >>> On 01/09/15 13:55, Meng Xu wrote: 2015-09-01 1:47 GMT-04:00 Chao Peng : > On Mon, Aug 31, 2015 at 04:09:31PM -0400, Meng Xu wrote: >> I looked into the xen/ar

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Andrew Cooper
On 01/09/15 15:20, Meng Xu wrote: > 2015-09-01 9:04 GMT-04:00 Andrew Cooper : >> On 01/09/15 13:55, Meng Xu wrote: >>> 2015-09-01 1:47 GMT-04:00 Chao Peng : On Mon, Aug 31, 2015 at 04:09:31PM -0400, Meng Xu wrote: > I looked into the xen/arch/x86/psr.c and found that the function > cat

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Meng Xu
2015-09-01 9:04 GMT-04:00 Andrew Cooper : > On 01/09/15 13:55, Meng Xu wrote: >> 2015-09-01 1:47 GMT-04:00 Chao Peng : >>> On Mon, Aug 31, 2015 at 04:09:31PM -0400, Meng Xu wrote: I looked into the xen/arch/x86/psr.c and found that the function cat_cpu_init() just returned without initial

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Andrew Cooper
On 01/09/15 13:55, Meng Xu wrote: > 2015-09-01 1:47 GMT-04:00 Chao Peng : >> On Mon, Aug 31, 2015 at 04:09:31PM -0400, Meng Xu wrote: >>> I looked into the xen/arch/x86/psr.c and found that the function >>> cat_cpu_init() just returned without initializing the variable >>> "cat_socket_enable". >>>

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-09-01 Thread Meng Xu
2015-09-01 1:47 GMT-04:00 Chao Peng : > On Mon, Aug 31, 2015 at 04:09:31PM -0400, Meng Xu wrote: >> I looked into the xen/arch/x86/psr.c and found that the function >> cat_cpu_init() just returned without initializing the variable >> "cat_socket_enable". >> >> Both !cpu_has(c, X86_FEATURE_CAT) and

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-08-31 Thread Chao Peng
On Mon, Aug 31, 2015 at 04:09:31PM -0400, Meng Xu wrote: > I looked into the xen/arch/x86/psr.c and found that the function > cat_cpu_init() just returned without initializing the variable > "cat_socket_enable". > > Both !cpu_has(c, X86_FEATURE_CAT) and c->cpuid_level < > PSR_CPUID_LEVEL_CAT are

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-08-31 Thread Andrew Cooper
On 31/08/15 21:09, Meng Xu wrote: > Hi Andrew and Chao, > > 2015-08-31 14:25 GMT-04:00 Andrew Cooper : >> On 31/08/15 18:42, Meng Xu wrote: >> >> Hi Chao, >> >> I'm Meng Xu from the University of Pennsylvania. >> >> We purchased a computer that has Intel(R) Xeon(R) CPU E5-2618L v3 @ 2.30GHz >> ins

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-08-31 Thread Meng Xu
Hi Andrew and Chao, 2015-08-31 14:25 GMT-04:00 Andrew Cooper : > > On 31/08/15 18:42, Meng Xu wrote: > > Hi Chao, > > I'm Meng Xu from the University of Pennsylvania. > > We purchased a computer that has Intel(R) Xeon(R) CPU E5-2618L v3 @ 2.30GHz > inside. > According to > http://www.intel.com/c

Re: [Xen-devel] Question about the CAT and CMT in Xen

2015-08-31 Thread Andrew Cooper
On 31/08/15 18:42, Meng Xu wrote: > Hi Chao, > > I'm Meng Xu from the University of Pennsylvania. > > We purchased a computer that has Intel(R) Xeon(R) CPU E5-2618L v3 @ > 2.30GHz inside. > According to > http://www.intel.com/content/www/us/en/communications/cache-monitoring-cache-allocation-techno

[Xen-devel] Question about the CAT and CMT in Xen

2015-08-31 Thread Meng Xu
Hi Chao, I'm Meng Xu from the University of Pennsylvania. We purchased a computer that has Intel(R) Xeon(R) CPU E5-2618L v3 @ 2.30GHz inside. According to http://www.intel.com/content/www/us/en/communications/cache-monitoring-cache-allocation-technologies.html, Intel E5-2618L v3 should support bo