Thanks, the patch applied against 6.0-rc6 kernel worked and the amdgpu module loaded and works on my Radeon R7 250 (Cape Verde) GPU.
Arthur Marsh.
On 20 September 2022 2:03:54 am ACST, Alex Deucher <alexdeucher@xxxxxxxxx> wrote:
>On Sun, Sep 18, 2022 at 8:09 AM root <arthur.marsh@xxxxxxxxxxxxxxxx> wrote:
>>
>> Hi, I recently experienced lock-ups that only responded to magic sysreq
>> reboots when the amdgpu module was loading on my pc (Athlon II X4 640 CPU,
>> with Radeon R7 250 - Cape Verde).
>>
>> .config has:
>>
>> CONFIG_DRM_AMDGPU=m
>> CONFIG_DRM_AMDGPU_SI=y
>> # CONFIG_DRM_AMDGPU_CIK is not set
>> # CONFIG_DRM_AMDGPU_USERPTR is not set
>>
>> kernel command line has:
>>
>> amdgpu.audio=1 amdgpu.si_support=1 radeon.si_support=0 page_owner=on \
>> amdgpu.gpu_recovery=1
>>
>> Bisecting lead to:
>>
>> commit 66f99628eb24409cb8feb5061f78283c8b65f820
>> Author: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
>> Date: Tue Sep 6 15:01:49 2022 -0400
>>
>> drm/amdgpu: use dirty framebuffer helper
>>
>> Currently, we aren't handling DRM_IOCTL_MODE_DIRTYFB. So, use
>> drm_atomic_helper_dirtyfb() as the dirty callback in the amdgpu_fb_funcs
>> struct.
>>
>> Signed-off-by: Hamza Mahfooz <hamza.mahfooz@xxxxxxx>
>> Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
>> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
>> index c20922a5af9f..5b09c8f4fe95 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
>> @@ -38,6 +38,7 @@
>> #include <linux/pci.h>
>> #include <linux/pm_runtime.h>
>> #include <drm/drm_crtc_helper.h>
>> +#include <drm/drm_damage_helper.h>
>> #include <drm/drm_edid.h>
>> #include <drm/drm_gem_framebuffer_helper.h>
>> #include <drm/drm_fb_helper.h>
>> @@ -496,6 +497,7 @@ bool amdgpu_display_ddc_probe(struct amdgpu_connector *amdgpu_connector,
>> static const struct drm_framebuffer_funcs amdgpu_fb_funcs = {
>> .destroy = drm_gem_fb_destroy,
>> .create_handle = drm_gem_fb_create_handle,
>> + .dirty = drm_atomic_helper_dirtyfb,
>> };
>>
>> uint32_t amdgpu_display_supported_domains(struct amdgpu_device *adev,
>>
>> After doing a git bisect reset, git pull and reverting the patch above, I
>> rebuilt the kernel and am successfully running with the amdgpu module loaded
>> and using the Radeon R7 250 GPU.
>>
>> I am happy to supply any further configuration details.
>
>Does the attached patch help?
>
>Alex
>
>
>>
>> Arthur Marsh.
--
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