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
diff --git a/lib/extensions/mpam/mpam.c b/lib/extensions/mpam/mpam.c
index 875ad9c..5285b96 100644
--- a/lib/extensions/mpam/mpam.c
+++ b/lib/extensions/mpam/mpam.c
@@ -11,19 +11,19 @@
#include <arch_helpers.h>
#include <lib/extensions/mpam.h>
-void mpam_enable(cpu_context_t *context)
+void mpam_enable_per_world(per_world_context_t *per_world_ctx)
{
u_register_t mpam3_el3;
- mpam3_el3 = read_ctx_reg(get_el3state_ctx(context), CTX_MPAM3_EL3);
-
/*
* Enable MPAM, and disable trapping to EL3 when lower ELs access their
* own MPAM registers
*/
+ mpam3_el3 = per_world_ctx->ctx_mpam3_el3;
mpam3_el3 = (mpam3_el3 | MPAM3_EL3_MPAMEN_BIT) &
~(MPAM3_EL3_TRAPLOWER_BIT);
- write_ctx_reg(get_el3state_ctx(context), CTX_MPAM3_EL3, mpam3_el3);
+
+ per_world_ctx->ctx_mpam3_el3 = mpam3_el3;
}
/*