linux-kernel - Re: [PATCH v2 3/6] drm/ci: build virtual GPU driver as module

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Message-ID: <bb94b70d-cb6d-4ca6-8c80-abb6a12c2ef3@collabora.com>
Date: Thu, 23 May 2024 11:15:42 +0530
From: Vignesh Raman <vignesh.raman@...labora.com>
To: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc: dri-devel@...ts.freedesktop.org, daniels@...labora.com,
 helen.koike@...labora.com, airlied@...il.com, daniel@...ll.ch,
 robdclark@...il.com, david.heidelberg@...labora.com,
 guilherme.gallo@...labora.com, sergi.blanch.torne@...labora.com,
 mcanal@...lia.com, linux-mediatek@...ts.infradead.org,
 linux-amlogic@...ts.infradead.org, linux-rockchip@...ts.infradead.org,
 amd-gfx@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
 intel-gfx@...ts.freedesktop.org, virtualization@...ts.linux-foundation.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/6] drm/ci: build virtual GPU driver as module

Hi Dmitry,

On 21/05/24 12:39, Vignesh Raman wrote:
> Hi Dmitry,
> 
> On 20/05/24 16:32, Dmitry Baryshkov wrote:
>> On Fri, May 17, 2024 at 02:54:59PM +0530, Vignesh Raman wrote:
>>> With latest IGT, the tests tries to load the module and it
>>> fails. So build the virtual GPU driver for virtio as module.
>>
>> Why? If the test fails on module loading (if the driver is built-in)
>> then it's the test that needs to be fixed, not the kerenel config.
>>
>> It's fine as a temporal workaround, but please include a link to the
>> patch posted to fix the issue.
> 
> I will recheck this issue and post a link to the fix.


This was the issue seen with IGT commit 
https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/commit/7d1841317c13c19c26b6352f923b205d43742c55 


[    4.450571] [drm:virtio_gpu_init] *ERROR* failed to find virt queues
[    4.450962] virtio_gpu virtio0: probe with driver virtio_gpu failed 
with error -2
[    5.471417] [drm:virtio_gpu_init] *ERROR* failed to find virt queues
[    5.471916] virtio_gpu virtio0: probe with driver virtio_gpu failed 
with error -2

https://gitlab.freedesktop.org/vigneshraman/linux/-/jobs/59037122

With the recent uprev of IGT to 
https://gitlab.freedesktop.org/drm/igt-gpu-tools/-/commit/0df7b9b97f9da0e364f5ee30fe331004b8c86b56,
this issue is not seen. So will drop this commit.

Regards,
Vignesh

> 
> Regards,
> Vignesh
> 
>>
>>>
>>> Signed-off-by: Vignesh Raman <vignesh.raman@...labora.com>
>>> ---
>>>
>>> v2:
>>>    - No changes.
>>>
>>> ---
>>>   drivers/gpu/drm/ci/build.sh       | 1 -
>>>   drivers/gpu/drm/ci/igt_runner.sh  | 6 +++---
>>>   drivers/gpu/drm/ci/image-tags.yml | 4 ++--
>>>   drivers/gpu/drm/ci/test.yml       | 1 +
>>>   drivers/gpu/drm/ci/x86_64.config  | 2 +-
>>>   5 files changed, 7 insertions(+), 7 deletions(-)
>>>
>>> diff --git a/drivers/gpu/drm/ci/build.sh b/drivers/gpu/drm/ci/build.sh
>>> index a67871fdcd3f..e938074ac8e7 100644
>>> --- a/drivers/gpu/drm/ci/build.sh
>>> +++ b/drivers/gpu/drm/ci/build.sh
>>> @@ -157,7 +157,6 @@ fi
>>>   mkdir -p artifacts/install/lib
>>>   mv install/* artifacts/install/.
>>> -rm -rf artifacts/install/modules
>>>   ln -s common artifacts/install/ci-common
>>>   cp .config artifacts/${CI_JOB_NAME}_config
>>> diff --git a/drivers/gpu/drm/ci/igt_runner.sh 
>>> b/drivers/gpu/drm/ci/igt_runner.sh
>>> index 20026612a9bd..55532f79fbdc 100755
>>> --- a/drivers/gpu/drm/ci/igt_runner.sh
>>> +++ b/drivers/gpu/drm/ci/igt_runner.sh
>>> @@ -30,10 +30,10 @@ case "$DRIVER_NAME" in
>>>               export IGT_FORCE_DRIVER="panfrost"
>>>           fi
>>>           ;;
>>> -    amdgpu)
>>> +    amdgpu|virtio_gpu)
>>>           # Cannot use HWCI_KERNEL_MODULES as at that point we don't 
>>> have the module in /lib
>>> -        mv /install/modules/lib/modules/* /lib/modules/.
>>> -        modprobe amdgpu
>>> +        mv /install/modules/lib/modules/* /lib/modules/. || true
>>> +        modprobe --first-time $DRIVER_NAME
>>>           ;;
>>>   esac
>>> diff --git a/drivers/gpu/drm/ci/image-tags.yml 
>>> b/drivers/gpu/drm/ci/image-tags.yml
>>> index 60323ebc7304..328f5c560742 100644
>>> --- a/drivers/gpu/drm/ci/image-tags.yml
>>> +++ b/drivers/gpu/drm/ci/image-tags.yml
>>> @@ -4,9 +4,9 @@ variables:
>>>      DEBIAN_BASE_TAG: "${CONTAINER_TAG}"
>>>      DEBIAN_X86_64_BUILD_IMAGE_PATH: "debian/x86_64_build"
>>> -   DEBIAN_BUILD_TAG: "2023-10-08-config"
>>> +   DEBIAN_BUILD_TAG: "2024-05-09-virtio"
>>> -   KERNEL_ROOTFS_TAG: "2023-10-06-amd"
>>> +   KERNEL_ROOTFS_TAG: "2024-05-09-virtio"
>>>      DEBIAN_X86_64_TEST_BASE_IMAGE: "debian/x86_64_test-base"
>>>      DEBIAN_X86_64_TEST_IMAGE_GL_PATH: "debian/x86_64_test-gl"
>>> diff --git a/drivers/gpu/drm/ci/test.yml b/drivers/gpu/drm/ci/test.yml
>>> index 612c9ede3507..864ac3809d84 100644
>>> --- a/drivers/gpu/drm/ci/test.yml
>>> +++ b/drivers/gpu/drm/ci/test.yml
>>> @@ -350,6 +350,7 @@ virtio_gpu:none:
>>>     script:
>>>       - ln -sf $CI_PROJECT_DIR/install /install
>>>       - mv install/bzImage /lava-files/bzImage
>>> +    - mkdir -p /lib/modules
>>
>> Is it necessary to create it manually here?
>>
>>>       - mkdir -p $CI_PROJECT_DIR/results
>>>       - ln -sf $CI_PROJECT_DIR/results /results
>>>       - install/crosvm-runner.sh install/igt_runner.sh
>>> diff --git a/drivers/gpu/drm/ci/x86_64.config 
>>> b/drivers/gpu/drm/ci/x86_64.config
>>> index 1cbd49a5b23a..78479f063e8e 100644
>>> --- a/drivers/gpu/drm/ci/x86_64.config
>>> +++ b/drivers/gpu/drm/ci/x86_64.config
>>> @@ -91,7 +91,7 @@ CONFIG_KVM=y
>>>   CONFIG_KVM_GUEST=y
>>>   CONFIG_VIRT_DRIVERS=y
>>>   CONFIG_VIRTIO_FS=y
>>> -CONFIG_DRM_VIRTIO_GPU=y
>>> +CONFIG_DRM_VIRTIO_GPU=m
>>>   CONFIG_SERIAL_8250_CONSOLE=y
>>>   CONFIG_VIRTIO_NET=y
>>>   CONFIG_VIRTIO_CONSOLE=y
>>> -- 
>>> 2.40.1
>>>
>>