diff options
| author | Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com> | 2026-08-06 10:12:02 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-10-07 11:55:42 -0400 |
| commit | 0bef0a6c2cb3b128af313c8c30a8a9385b64f944 (patch) | |
| tree | 1c03ad9c13cfe1a6340c556810c360f95e416292 | |
| parent | 5b8be3b01f99e999d6d2579a3f55129197e3f47e (diff) | |
drm/amdgpu: prevent suspend in fault handler
Temporarily increment the PM reference count during page handling to
ensure the GPU does not enter a sleep state.
v2 (Shahyan): Added commit description
Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Shahyan Soltani <shahyan.soltani@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c index e5babf801f29..3229a82e342e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c @@ -129,6 +129,8 @@ static vm_fault_t amdgpu_gem_fault(struct vm_fault *vmf) return ret; if (drm_dev_enter(ddev, &idx)) { + pm_runtime_get_noresume(ddev->dev); + ret = amdgpu_bo_fault_reserve_notify(bo); if (ret) { drm_dev_exit(idx); @@ -138,6 +140,7 @@ static vm_fault_t amdgpu_gem_fault(struct vm_fault *vmf) ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot, TTM_BO_VM_NUM_PREFAULT); + pm_runtime_put_noidle(ddev->dev); drm_dev_exit(idx); } else { ret = ttm_bo_vm_dummy_page(vmf, vmf->vma->vm_page_prot); |