feat(el3-spmc): synchronize access to the s-el0 sp context
This patch locks and unlocks access to the S-EL0 SP context when its
runtime state and model are updated to avoid issues around concurrent
access to global state.
Signed-off-by: Achin Gupta <achin.gupta@arm.com>
Signed-off-by: Nishant Sharma <nishant.sharma@arm.com>
Change-Id: I427657050574c189cbaf82c1371e3ee44bc1663e
diff --git a/services/std_svc/spm/el3_spmc/spmc.h b/services/std_svc/spm/el3_spmc/spmc.h
index c8515e5..e093a82 100644
--- a/services/std_svc/spm/el3_spmc/spmc.h
+++ b/services/std_svc/spm/el3_spmc/spmc.h
@@ -168,6 +168,9 @@
/* Mailbox tracking. */
struct mailbox mailbox;
+ /* Lock to protect the runtime state of a S-EL0 SP execution context. */
+ spinlock_t rt_state_lock;
+
/* Pointer to translation table context of a S-EL0 SP. */
xlat_ctx_t *xlat_ctx_handle;