Re: [Xen-devel] [PATCH v3 1/4] x86: Support enable CDP by boot parameter and add get CDP status

>>> On 14.09.15 at 05:27, wrote: > --- a/xen/arch/x86/psr.c > +++ b/xen/arch/x86/psr.c > @@ -21,9 +21,16 @@ > > #define PSR_CMT(1<<0) > #define PSR_CAT(1<<1) > +#define PSR_CDP(1<<2) > > struct psr_cat_cbm { > -uint64_t cbm; > +union

Re: [Xen-devel] [PATCH v3 1/4] x86: Support enable CDP by boot parameter and add get CDP status

On Mon, Sep 14, 2015 at 11:27:04AM +0800, He Chen wrote: > @@ -1165,9 +1165,9 @@ This option can be specified more than once (up to 8 > times at present). > > `= ` > > ### psr (Intel) > -> `= List of ( cmt: | rmid_max: | cat: | > cos_max: )` > +> `= List of ( cmt: | rmid_max: | cat: | >

[Xen-devel] [PATCH v3 1/4] x86: Support enable CDP by boot parameter and add get CDP status

Add boot parameter `psr=cdp` to enable CDP at boot time. Intel Code/Data Prioritization(CDP) feature is based on CAT. Note that cos_max would be half when CDP is on. struct psr_cat_cbm is extended to support CDP operation. Extend psr_get_cat_l3_info sysctl to get CDP status. Signed-off-by: He