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-rw-r--r--docs/devel/testing.rst11
1 files changed, 8 insertions, 3 deletions
diff --git a/docs/devel/testing.rst b/docs/devel/testing.rst
index 66ef219f69..7f04ca104e 100644
--- a/docs/devel/testing.rst
+++ b/docs/devel/testing.rst
@@ -161,9 +161,14 @@ GCC gcov support
``gcov`` is a GCC tool to analyze the testing coverage by
instrumenting the tested code. To use it, configure QEMU with
``--enable-gcov`` option and build. Then run ``make check`` as usual.
-Reports can be obtained by running ``gcov`` command on the output
-files under ``$build_dir/tests/``, please read the ``gcov``
-documentation for more information.
+
+If you want to gather coverage information on a single test the ``make
+clean-coverage`` target can be used to delete any existing coverage
+information before running a single test.
+
+Reports can be obtained by running ``gcov`` command
+on the output files under ``$build_dir/tests/``, please read the
+``gcov`` documentation for more information.
QEMU iotests
============