diff options
| author | Ramesh Errabolu <Ramesh.Errabolu@amd.com> | 2024-11-05 18:50:02 -0600 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-11-08 11:45:29 -0500 |
| commit | 8e29057eecb83e45898a31285ff8b82dff188dd1 (patch) | |
| tree | a48336c677851b61061ef80e38e6e411ee74ad56 | |
| parent | 69e9a9e65b1ea542d07e3fdd4222b46e9f5a3a29 (diff) | |
drm/amdgpu: Inform if PCIe based P2P links are not available
Raise an info message in kernel log if PCIe root complex
determines that a AMD GPU device D<i> cannot have P2P
communication with another AMD GPU device D<j>
Signed-off-by: Ramesh Errabolu <Ramesh.Errabolu@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 38a17571da75..a72c90da3d1d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -6200,6 +6200,9 @@ bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev, bool p2p_access = !adev->gmc.xgmi.connected_to_cpu && !(pci_p2pdma_distance(adev->pdev, peer_adev->dev, false) < 0); + if (!p2p_access) + dev_info(adev->dev, "PCIe P2P access from peer device %s is not supported by the chipset\n", + pci_name(peer_adev->pdev)); bool is_large_bar = adev->gmc.visible_vram_size && adev->gmc.real_vram_size == adev->gmc.visible_vram_size; |