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@xxxxxxx> --- drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 230c24638a34..76182d5c719d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -6222,6 +6222,9 @@ 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, "has no link with Peer device: %s\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; -- 2.34.1
