[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v15 19/23] x86: L2 CAT: implement set value flow.
This patch implements L2 CAT set value related callback function and domctl interface. Signed-off-by: Yi Sun <yi.y.sun@xxxxxxxxxxxxxxx> Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx> --- v11: - remove 'domctl->u.psr_cat_op.data' check because it has been moved into 'psr_set_val'. (suggested by Jan Beulich) - move 'feat->cos_reg_val' assignment and value comparison in 'write_msr' callback function out as generic codes. (suggested by Jan Beulich) v10: - check input data and remove cast in domctl. (suggested by Jan Beulich) - remove some hooks assignment due to previous patches changes. (suggested by Jan Beulich) - remove cast in 'l2_cat_write_msr'. (suggested by Jan Beulich) - remove 'return in 'l2_cat_write_msr'. (suggested by Jan Beulich) v9: - reuse some CAT common functions for L2 CAT to reduce redundant codes. (suggested by Roger Pau) - remove parameter 'found' from 'cat_compare_val' and modify the return values to let caller know if the id is found or not. These things are done in patch "x86: refactor psr: set value: implement cos finding flow." (suggested by Roger Pau and Dario Faggioli) - remove 'get_cos_num' related codes. (suggested by Jan Beulich) - modify 'l2_cat_write_msr' according to previous patch change. - changes about 'uint64_t' to 'uint32_t'. (suggested by Jan Beulich) v8: - modify 'l2_cat_write_msr' to 'void'. v5: - remove type check in callback function. (suggested by Jan Beulich) - modify return value of callback functions because we do not need them to return number of entries the feature uses. In caller, we call 'get_cos_num' to get the number of entries the feature uses. (suggested by Jan Beulich) - remove 'l2_cat_get_cos_max_from_type'. (suggested by Jan Beulich) - rename 'l2_cat_exceeds_cos_max' to 'l2_cat_fits_cos_max'. (suggested by Jan Beulich) v4: - create this patch because of codes architecture change. (suggested by Jan Beulich) --- xen/arch/x86/domctl.c | 6 ++++++ xen/arch/x86/psr.c | 1 + xen/include/public/domctl.h | 1 + 3 files changed, 8 insertions(+) diff --git a/xen/arch/x86/domctl.c b/xen/arch/x86/domctl.c index b4847b6..127c84e 100644 --- a/xen/arch/x86/domctl.c +++ b/xen/arch/x86/domctl.c @@ -1462,6 +1462,12 @@ long arch_do_domctl( PSR_CBM_TYPE_L3_DATA); break; + case XEN_DOMCTL_PSR_CAT_OP_SET_L2_CBM: + ret = psr_set_val(d, domctl->u.psr_cat_op.target, + domctl->u.psr_cat_op.data, + PSR_CBM_TYPE_L2); + break; + case XEN_DOMCTL_PSR_CAT_OP_GET_L3_CBM: ret = psr_get_val(d, domctl->u.psr_cat_op.target, &val32, PSR_CBM_TYPE_L3); diff --git a/xen/arch/x86/psr.c b/xen/arch/x86/psr.c index 4a8b01b..c355f1e 100644 --- a/xen/arch/x86/psr.c +++ b/xen/arch/x86/psr.c @@ -408,6 +408,7 @@ static const struct feat_props l3_cdp_props = { /* L2 CAT props */ static void l2_cat_write_msr(unsigned int cos, uint32_t val, enum cbm_type type) { + wrmsrl(MSR_IA32_PSR_L2_MASK(cos), val); } static const struct feat_props l2_cat_props = { diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h index 61d44cd..0669c31 100644 --- a/xen/include/public/domctl.h +++ b/xen/include/public/domctl.h @@ -1142,6 +1142,7 @@ struct xen_domctl_psr_cat_op { #define XEN_DOMCTL_PSR_CAT_OP_SET_L3_DATA 3 #define XEN_DOMCTL_PSR_CAT_OP_GET_L3_CODE 4 #define XEN_DOMCTL_PSR_CAT_OP_GET_L3_DATA 5 +#define XEN_DOMCTL_PSR_CAT_OP_SET_L2_CBM 6 #define XEN_DOMCTL_PSR_CAT_OP_GET_L2_CBM 7 uint32_t cmd; /* IN: XEN_DOMCTL_PSR_CAT_OP_* */ uint32_t target; /* IN */ -- 1.9.1 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx https://lists.xen.org/xen-devel
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