coherent.h: assert(sizeof(struct coherent) <= DCACHE_LINE_SIZE)

Supersedes the "best effort" use of `packed`, being removed by Signed-off-by: Marc Herbert <marc.herbert@intel.com>
marc-hb · Nov 27, 2023 · a140c26 · a140c26
1 parent 5c0f8bd
commit a140c26
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/src/include/sof/coherent.h b/src/include/sof/coherent.h
@@ -69,6 +69,14 @@ struct coherent {
 	struct list_item list;	/* coherent list iteration */
 } __coherent;
 
+#if CONFIG_INCOHERENT
+#  ifdef __ZEPHYR__
+BUILD_ASSERT(sizeof(struct coherent)  <= DCACHE_LINE_SIZE, "DCACHE_LINE_SIZE too small");
+#  else
+STATIC_ASSERT(sizeof(struct coherent) <= DCACHE_LINE_SIZE,  DCACHE_LINE_SIZE_too_small);
+#  endif
+#endif
+
 /* debug address aliases */
 #ifdef COHERENT_CHECK_ALIAS
 #define ADDR_IS_INCOHERENT(_c) assert(!is_uncached(_c))