commit b5d95596dba39647a05d51f3c6689f3ac5c099f8
author Arvind Ram Prakash <arvind.ramprakash@arm.com> Wed Nov 08 12:28:30 2023 -0600
committer Jayanth Dodderi Chidanand <jayanthdodderi.chidanand@arm.com> Thu Dec 21 12:37:21 2023 +0000
tree 57d67d2187ca3a6828a9d1b5b465b837ff6a7f10
parent 2235fb6ab5387039c3e96769fc39680f1ed5f79f

refactor(cm): move MPAM3_EL3 reg to per world context

Refactor MPAM3_EL3 to be world-specific, eliminating redundant cross-CPU
value duplication and reducing memory footprint.

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: Iddf020a5462737e01ac35e4f2b2b204a8759fafb

include/lib/el3_runtime/aarch64/context.h

diff --git a/include/lib/el3_runtime/aarch64/context.h b/include/lib/el3_runtime/aarch64/context.h
index 235b2cf..215156b 100644
--- a/include/lib/el3_runtime/aarch64/context.h
+++ b/include/lib/el3_runtime/aarch64/context.h
@@ -62,23 +62,22 @@
 #define CTX_ELR_EL3		U(0x20)
 #define CTX_PMCR_EL0		U(0x28)
 #define CTX_IS_IN_EL3		U(0x30)
-#define CTX_MPAM3_EL3		U(0x38)
 /* Constants required in supporting nested exception in EL3 */
-#define CTX_SAVED_ELR_EL3	U(0x40)
+#define CTX_SAVED_ELR_EL3	U(0x38)
 /*
  * General purpose flag, to save various EL3 states
  * FFH mode : Used to identify if handling nested exception
  * KFH mode : Used as counter value
  */
-#define CTX_NESTED_EA_FLAG	U(0x48)
+#define CTX_NESTED_EA_FLAG	U(0x40)
 #if FFH_SUPPORT
- #define CTX_SAVED_ESR_EL3	U(0x50)
- #define CTX_SAVED_SPSR_EL3	U(0x58)
- #define CTX_SAVED_GPREG_LR	U(0x60)
- #define CTX_EL3STATE_END	U(0x70) /* Align to the next 16 byte boundary */
+ #define CTX_SAVED_ESR_EL3	U(0x48)
+ #define CTX_SAVED_SPSR_EL3	U(0x50)
+ #define CTX_SAVED_GPREG_LR	U(0x58)
+ #define CTX_EL3STATE_END	U(0x60) /* Align to the next 16 byte boundary */
 #else
  #define CTX_EL3STATE_END	U(0x50) /* Align to the next 16 byte boundary */
-#endif
+#endif /* FFH_SUPPORT */
 
 /*******************************************************************************
  * Constants that allow assembler code to access members of and the
@@ -343,7 +342,8 @@
  ******************************************************************************/
 #define CTX_CPTR_EL3			U(0x0)
 #define CTX_ZCR_EL3			U(0x8)
-#define CTX_PERWORLD_EL3STATE_END	U(0x10)
+#define CTX_MPAM3_EL3			U(0x10)
+#define CTX_PERWORLD_EL3STATE_END	U(0x18)
 
 #ifndef __ASSEMBLER__
 
@@ -462,6 +462,7 @@
 typedef struct per_world_context {
 	uint64_t ctx_cptr_el3;
 	uint64_t ctx_zcr_el3;
+	uint64_t ctx_mpam3_el3;
 } per_world_context_t;
 
 extern per_world_context_t per_world_context[CPU_DATA_CONTEXT_NUM];

include/lib/extensions/mpam.h

diff --git a/include/lib/extensions/mpam.h b/include/lib/extensions/mpam.h
index 170f919..3dd5652 100644
--- a/include/lib/extensions/mpam.h
+++ b/include/lib/extensions/mpam.h
@@ -12,10 +12,10 @@
 #include <context.h>
 
 #if ENABLE_FEAT_MPAM
-void mpam_enable(cpu_context_t *context);
+void mpam_enable_per_world(per_world_context_t *per_world_ctx);
 void mpam_init_el2_unused(void);
 #else
-static inline void mpam_enable(cpu_context_t *context)
+static inline void mpam_enable_per_world(per_world_context_t *per_world_ctx)
 {
 }
 static inline void mpam_init_el2_unused(void)