scripts/runqemu: move render nodes check to runqemu from selftest

This will produce a more useful hint for those setting
up or testing virgl headless:

runqemu - ERROR - No render nodes found in /dev/dri: ['by-path', 'card0']. If /dev/dri/renderD* is absent due to lack of suitable GPU, 'modprobe vgem' will create one suitable for mesa llvmpipe software renderer.

as qemu itself isn't helpful:

alex@Zen2:/srv/storage/alex/yocto/build-64-alt$ qemu-system-x86_64 -display egl-headless
qemu-system-x86_64: egl: no drm render node available
qemu-system-x86_64: egl: render node init failed

(From OE-Core rev: cbbada6a6c9b0a2e97f7395117dad986555f2db9)

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 0 insertions, 7 deletions

diff --git a/meta/lib/oeqa/selftest/cases/runtime_test.py b/meta/lib/oeqa/selftest/cases/runtime_test.py
index 13e8760a16..e32c4aff85 100644
--- a/meta/lib/oeqa/selftest/cases/runtime_test.py
+++ b/meta/lib/oeqa/selftest/cases/runtime_test.py
@@ -260,13 +260,6 @@ class TestImage(OESelftestTestCase):
         if distro and (distro in ['debian-9', 'debian-10', 'centos-7', 'centos-8', 'ubuntu-16.04', 'ubuntu-18.04'] or distro.startswith('almalinux')):
             self.skipTest('virgl headless cannot be tested with %s' %(distro))
 
-        render_hint = """If /dev/dri/renderD* is absent due to lack of suitable GPU, 'modprobe vgem' will create one suitable for mesa llvmpipe software renderer."""
-        try:
-            content = os.listdir("/dev/dri")
-            if len([i for i in content if i.startswith('render')]) == 0:
-                self.fail("No render nodes found in /dev/dri: %s. %s" %(content, render_hint))
-        except FileNotFoundError:
-            self.fail("/dev/dri directory does not exist; no render nodes available on this machine. %s" %(render_hint))
         qemu_distrofeatures = get_bb_var('DISTRO_FEATURES', 'qemu-system-native')
         features = 'IMAGE_CLASSES += "testimage"\n'
         if 'opengl' not in qemu_distrofeatures: