From bfee9a8aa3597b5f8994b6f7a18e7fef1aa15061 Mon Sep 17 00:00:00 2001 From: Yi Sun Date: Tue, 1 Aug 2017 11:05:00 +0200 Subject: [PATCH] x86: L2 CAT: implement get hw info flow. This patch implements L2 CAT get HW info flow and interface in sysctl. Signed-off-by: Yi Sun Reviewed-by: Jan Beulich --- xen/arch/x86/psr.c | 4 ++++ xen/arch/x86/sysctl.c | 23 +++++++++++++++++++++-- xen/include/public/sysctl.h | 1 + 3 files changed, 26 insertions(+), 2 deletions(-) diff --git a/xen/arch/x86/psr.c b/xen/arch/x86/psr.c index 9a91ccda2c..4dd9112d3e 100644 --- a/xen/arch/x86/psr.c +++ b/xen/arch/x86/psr.c @@ -239,6 +239,10 @@ static enum psr_feat_type psr_cbm_type_to_feat_type(enum cbm_type type) feat_type = FEAT_TYPE_L3_CDP; break; + case PSR_CBM_TYPE_L2: + feat_type = FEAT_TYPE_L2_CAT; + break; + default: ASSERT_UNREACHABLE(); } diff --git a/xen/arch/x86/sysctl.c b/xen/arch/x86/sysctl.c index a92384b10b..9aca241487 100644 --- a/xen/arch/x86/sysctl.c +++ b/xen/arch/x86/sysctl.c @@ -173,11 +173,11 @@ long arch_do_sysctl( case XEN_SYSCTL_psr_cat_op: switch ( sysctl->u.psr_cat_op.cmd ) - { - case XEN_SYSCTL_PSR_CAT_get_l3_info: { uint32_t data[PSR_INFO_ARRAY_SIZE]; + case XEN_SYSCTL_PSR_CAT_get_l3_info: + { ret = psr_get_info(sysctl->u.psr_cat_op.target, PSR_CBM_TYPE_L3, data, ARRAY_SIZE(data)); if ( ret ) @@ -195,6 +195,25 @@ long arch_do_sysctl( break; } + case XEN_SYSCTL_PSR_CAT_get_l2_info: + { + ret = psr_get_info(sysctl->u.psr_cat_op.target, + PSR_CBM_TYPE_L2, data, ARRAY_SIZE(data)); + if ( ret ) + break; + + sysctl->u.psr_cat_op.u.l3_info.cos_max = + data[PSR_INFO_IDX_COS_MAX]; + sysctl->u.psr_cat_op.u.l3_info.cbm_len = + data[PSR_INFO_IDX_CAT_CBM_LEN]; + sysctl->u.psr_cat_op.u.l3_info.flags = + data[PSR_INFO_IDX_CAT_FLAG]; + + if ( !ret && __copy_field_to_guest(u_sysctl, sysctl, u.psr_cat_op) ) + ret = -EFAULT; + break; + } + default: ret = -EOPNOTSUPP; break; diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h index ee76a66925..4c76d3aa02 100644 --- a/xen/include/public/sysctl.h +++ b/xen/include/public/sysctl.h @@ -744,6 +744,7 @@ typedef struct xen_sysctl_pcitopoinfo xen_sysctl_pcitopoinfo_t; DEFINE_XEN_GUEST_HANDLE(xen_sysctl_pcitopoinfo_t); #define XEN_SYSCTL_PSR_CAT_get_l3_info 0 +#define XEN_SYSCTL_PSR_CAT_get_l2_info 1 struct xen_sysctl_psr_cat_op { uint32_t cmd; /* IN: XEN_SYSCTL_PSR_CAT_* */ uint32_t target; /* IN */ -- 2.39.5