ipc4: helper: Do not invalidate cache of whole mailbox for module init

Invalidate cache for only the module init payload size not the whole
mailbox.

Signed-off-by: Jyri Sarha <jyri.sarha@linux.intel.com>

Author: Jyri Sarha

src/ipc/ipc4/helper.c

@@ -139,12 +139,19 @@ __cold struct comp_dev *comp_new_ipc4(struct ipc4_module_init_instance *module_i
 	ipc_config.core = module_init->extension.r.core_id;
 	ipc_config.ipc_config_size = module_init->extension.r.param_block_size * sizeof(uint32_t);
 	ipc_config.ipc_extended_init = module_init->extension.r.extended_init;
-
-	dcache_invalidate_region((__sparse_force void __sparse_cache *)MAILBOX_HOSTBOX_BASE,
-				 MAILBOX_HOSTBOX_SIZE);
-
+	if (ipc_config.ipc_config_size > MAILBOX_HOSTBOX_SIZE) {
+		tr_err(&ipc_tr, "IPC payload size %u too big for the message window",
+		       ipc_config.ipc_config_size);
+		return NULL;
+	}
+#ifdef CONFIG_DCACHE_LINE_SIZE
+	if (!IS_ENABLED(CONFIG_LIBRARY))
+		sys_cache_data_invd_range((__sparse_force void __sparse_cache *)
+					  MAILBOX_HOSTBOX_BASE,
+					  ALIGN_UP(ipc_config.ipc_config_size,
+						   CONFIG_DCACHE_LINE_SIZE));
+#endif
 	data = ipc4_get_comp_new_data();
-
 #if CONFIG_LIBRARY
 	ipc_config.ipc_config_size -= sizeof(struct sof_uuid);
 	drv = ipc4_library_get_comp_drv(data + ipc_config.ipc_config_size);