Am 2021-09-07 um 12:07 p.m. schrieb James Zhu: > Separate iommu_resume from kfd_resume, and move it before > other amdgpu ip init/resume. > > Fixed Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=211277 I think the change is OK. But I don't understand how the IOMMUv2 initialization sequence could affect a crash in DM. The display should not depend on IOMMUv2 at all. What am I missing? Regards, Felix > > Signed-off-by: James Zhu <James.Zhu@xxxxxxx> > --- > drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > index 653bd8f..e3f0308 100644 > --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c > @@ -2393,6 +2393,10 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev) > if (r) > goto init_failed; > > + r = amdgpu_amdkfd_resume_iommu(adev); > + if (r) > + goto init_failed; > + > r = amdgpu_device_ip_hw_init_phase1(adev); > if (r) > goto init_failed; > @@ -3147,6 +3151,10 @@ static int amdgpu_device_ip_resume(struct amdgpu_device *adev) > { > int r; > > + r = amdgpu_amdkfd_resume_iommu(adev); > + if (r) > + return r; > + > r = amdgpu_device_ip_resume_phase1(adev); > if (r) > return r; > @@ -4602,6 +4610,10 @@ int amdgpu_do_asic_reset(struct list_head *device_list_handle, > dev_warn(tmp_adev->dev, "asic atom init failed!"); > } else { > dev_info(tmp_adev->dev, "GPU reset succeeded, trying to resume\n"); > + r = amdgpu_amdkfd_resume_iommu(tmp_adev); > + if (r) > + goto out; > + > r = amdgpu_device_ip_resume_phase1(tmp_adev); > if (r) > goto out;
