[PATCH 3/7] x86/resctrl: Introduce sdciae_capable in rdt_resource

[Babu Moger]

Detect SDCIAE`(L3 Smart Data Cache Injection Allocation Enforcement)
feature and initialize sdciae_capable.

Signed-off-by: Babu Moger <babu.moger@xxxxxxx>
---
 arch/x86/kernel/cpu/resctrl/core.c | 7 +++++++
 include/linux/resctrl.h            | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/arch/x86/kernel/cpu/resctrl/core.c b/arch/x86/kernel/cpu/resctrl/core.c
index c4dfc768ddf5..e4381e3feb75 100644
--- a/arch/x86/kernel/cpu/resctrl/core.c
+++ b/arch/x86/kernel/cpu/resctrl/core.c
@@ -296,6 +296,11 @@ static void rdt_get_cdp_config(int level)
 	rdt_resources_all[level].r_resctrl.cdp_capable = true;
 }
 
+static void rdt_get_sdciae_alloc_cfg(struct rdt_resource *r)
+{
+	r->sdciae_capable = true;
+}
+
 static void rdt_get_cdp_l3_config(void)
 {
 	rdt_get_cdp_config(RDT_RESOURCE_L3);
@@ -921,6 +926,8 @@ static __init bool get_rdt_alloc_resources(void)
 		rdt_get_cache_alloc_cfg(1, r);
 		if (rdt_cpu_has(X86_FEATURE_CDP_L3))
 			rdt_get_cdp_l3_config();
+		if (rdt_cpu_has(X86_FEATURE_SDCIAE))
+			rdt_get_sdciae_alloc_cfg(r);
 		ret = true;
 	}
 	if (rdt_cpu_has(X86_FEATURE_CAT_L2)) {
diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h
index b0875b99e811..281ba4fb8972 100644
--- a/include/linux/resctrl.h
+++ b/include/linux/resctrl.h
@@ -202,6 +202,7 @@ enum resctrl_scope {
  * @evt_list:		List of monitoring events
  * @fflags:		flags to choose base and info files
  * @cdp_capable:	Is the CDP feature available on this resource
+ * @sdciae_capable:	Is SDCIAE feature available on this resource
  */
 struct rdt_resource {
 	int			rid;
@@ -224,6 +225,7 @@ struct rdt_resource {
 	struct list_head	evt_list;
 	unsigned long		fflags;
 	bool			cdp_capable;
+	bool			sdciae_capable;
 };
 
 /**
-- 
2.34.1