diff options
| author | Yifan Zha <Yifan.Zha@amd.com> | 2024-06-27 15:06:23 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-12 11:10:23 +0200 |
| commit | 78f976b4a73be8563fb7d81c298b48a23d3ba88f (patch) | |
| tree | 599d764254b587653c4fc3f178ed57b76c633506 /drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | |
| parent | e072d3562c13f60e0261e196289ac322ee82c0ea (diff) | |
drm/amdgpu: Set no_hw_access when VF request full GPU fails
[ Upstream commit 33f23fc3155b13c4a96d94a0a22dc26db767440b ]
[Why]
If VF request full GPU access and the request failed,
the VF driver can get stuck accessing registers for an extended period during
the unload of KMS.
[How]
Set no_hw_access flag when VF request for full GPU access fails
This prevents further hardware access attempts, avoiding the prolonged
stuck state.
Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c index af50e6ce39e17..d7b76a3d2d558 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c @@ -132,8 +132,10 @@ int amdgpu_virt_request_full_gpu(struct amdgpu_device *adev, bool init) if (virt->ops && virt->ops->req_full_gpu) { r = virt->ops->req_full_gpu(adev, init); - if (r) + if (r) { + adev->no_hw_access = true; return r; + } adev->virt.caps &= ~AMDGPU_SRIOV_CAPS_RUNTIME; } |