[PATCH] drm: Simplify testing on UML with kunit.py

From: Michał Winiarski
Date: Thu Sep 01 2022 - 09:39:29 EST


DRM depends on IOMEM and DMA, introduce an additional Kconfig to pull in
IOMEM and DMA emulation on UML.
Since --kconfig_add usage is no longer needed, remove it from
documentation.

Signed-off-by: Michał Winiarski <michal.winiarski@xxxxxxxxx>
---
Documentation/gpu/drm-internals.rst | 7 +------
drivers/video/Kconfig | 4 ++++
2 files changed, 5 insertions(+), 6 deletions(-)

diff --git a/Documentation/gpu/drm-internals.rst b/Documentation/gpu/drm-internals.rst
index 5fd20a306718..c264a9587d21 100644
--- a/Documentation/gpu/drm-internals.rst
+++ b/Documentation/gpu/drm-internals.rst
@@ -228,16 +228,11 @@ follows:

.. code-block:: bash

- $ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/tests \
- --kconfig_add CONFIG_VIRTIO_UML=y \
- --kconfig_add CONFIG_UML_PCI_OVER_VIRTIO=y
+ $ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/tests

.. note::
The configuration included in ``.kunitconfig`` should be as generic as
possible.
- ``CONFIG_VIRTIO_UML`` and ``CONFIG_UML_PCI_OVER_VIRTIO`` are not
- included in it because they are only required for User Mode Linux.
-

Legacy Support Code
===================
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 0587e21abad9..f3266c9fa8a6 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -52,5 +52,9 @@ if FB || SGI_NEWPORT_CONSOLE

endif

+config DRM_UML_IO_EMULATION
+ def_bool y if UML && KUNIT
+ select UML_DMA_EMULATION
+ select UML_IOMEM_EMULATION

endmenu
--
2.37.3