diff --git a/repos/base-linux/src/test/sub_rm/config.h b/repos/base-linux/src/test/sub_rm/config.h
deleted file mode 100644
index e52a673f34..0000000000
--- a/repos/base-linux/src/test/sub_rm/config.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * \brief  Linux-specific policy for sub_rm test
- * \author Norman Feske
- * \date   2011-11-22
- */
-
-/*
- * Copyright (C) 2011-2017 Genode Labs GmbH
- *
- * This file is part of the Genode OS framework, which is distributed
- * under the terms of the GNU Affero General Public License version 3.
- */
-
-/*
- * The Linux implementation of the RM service does not support attaching
- * the same sub RM session twice. This configuration enables the respective
- * error-handling test.
- */
-enum { attach_twice_forbidden = true };
-
-enum { support_attach_sub_any = false };
-
diff --git a/repos/base/run/sub_rm.run b/repos/base/run/sub_rm.run
index e52a9190e2..c7573a446b 100644
--- a/repos/base/run/sub_rm.run
+++ b/repos/base/run/sub_rm.run
@@ -2,7 +2,7 @@ build "core init test/sub_rm"
 
 create_boot_directory
 
-install_config {
+set config {
 	<config>
 		<parent-provides>
 			<service name="ROM"/>
@@ -15,12 +15,19 @@ install_config {
 			<any-service> <parent/> </any-service>
 		</default-route>
 		<default caps="100"/>
-		<start name="test-sub_rm">
+		<start name="test-sub_rm">}
+
+append_if [have_spec linux] config {
+			<config attach_twice_forbidden="true" support_attach_sub_any="false"/>}
+
+append config {
 			<resource name="RAM" quantum="10M"/>
 		</start>
 	</config>
 }
 
+install_config $config
+
 build_boot_image "core ld.lib.so init test-sub_rm"
 
 append qemu_args "-nographic "
diff --git a/repos/base/src/test/sub_rm/config.h b/repos/base/src/test/sub_rm/config.h
deleted file mode 100644
index 69e1bb91d8..0000000000
--- a/repos/base/src/test/sub_rm/config.h
+++ /dev/null
@@ -1,15 +0,0 @@
-/*
- * \brief  Platform-specific policy for sub_rm test
- * \author Norman Feske
- * \date   2011-11-22
- */
-
-/*
- * Copyright (C) 2011-2017 Genode Labs GmbH
- *
- * This file is part of the Genode OS framework, which is distributed
- * under the terms of the GNU Affero General Public License version 3.
- */
-
-enum { attach_twice_forbidden = false };
-enum { support_attach_sub_any = true  };
diff --git a/repos/base/src/test/sub_rm/main.cc b/repos/base/src/test/sub_rm/main.cc
index 7fe5eb7ec9..d8553b3161 100644
--- a/repos/base/src/test/sub_rm/main.cc
+++ b/repos/base/src/test/sub_rm/main.cc
@@ -14,13 +14,11 @@
 #include <util/string.h>
 #include <base/log.h>
 #include <base/component.h>
+#include <base/attached_rom_dataspace.h>
 #include <base/sleep.h>
 #include <rm_session/connection.h>
 #include <region_map/client.h>
 
-/* platform-specific test policy */
-#include <config.h>
-
 using namespace Genode;
 
 
@@ -59,6 +57,8 @@ static void validate_pattern_at(char const *pattern, char const *ptr)
 
 void Component::construct(Env &env)
 {
+	Attached_rom_dataspace config(env, "config");
+
 	log("--- sub-rm test ---");
 
 	log("create RM connection");
@@ -89,7 +89,7 @@ void Component::construct(Env &env)
 	fill_ds_with_test_pattern(env, test_pattern(), ds, 0);
 	fill_ds_with_test_pattern(env, test_pattern_2(), ds, 4096);
 
-	if (!support_attach_sub_any) {
+	if (!config.xml().attribute_value("support_attach_sub_any", true)) {
 		log("attach RAM ds to any position at sub rm - this should fail");
 		try {
 			sub_rm.attach(ds, 0, 0, false, (addr_t)0);
@@ -157,7 +157,7 @@ void Component::construct(Env &env)
 	catch (Region_map::Region_conflict) {
 		log("attaching conflicting region failed as expected"); }
 
-	if (attach_twice_forbidden) {
+	if (config.xml().attribute_value("attach_twice_forbidden", false)) {
 		/*
 		 * Try to double-attach the same sub RM session. This should fail
 		 */
diff --git a/repos/base/src/test/sub_rm/target.mk b/repos/base/src/test/sub_rm/target.mk
index 977c857a49..f54a37dd2f 100644
--- a/repos/base/src/test/sub_rm/target.mk
+++ b/repos/base/src/test/sub_rm/target.mk
@@ -1,6 +1,3 @@
 TARGET = test-sub_rm
 SRC_CC = main.cc
 LIBS   = base
-
-# find 'config.h' depending on the current platform
-REP_INC_DIR += src/test/sub_rm