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authorAlex Sierra2022-08-25 15:42:08 -0500
committerAlex Deucher2022-08-30 17:07:43 -0400
commitb97e914552c3fcea71ce03f899e285f2178ec38b (patch)
treedc7b75bec0d815185573fc0f0ae834fea3492189 /drivers/gpu
parent2640174f4a139502f603f7bedf3a7011db714e1d (diff)
drm/amdgpu: ensure no PCIe peer access for CPU XGMI iolinks
[Why] Devices with CPU XGMI iolink do not support PCIe peer access. Signed-off-by: Alex Sierra <alex.sierra@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_device.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index f095a2513aff..1400abee9f40 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -5524,7 +5524,8 @@ bool amdgpu_device_is_peer_accessible(struct amdgpu_device *adev,
~*peer_adev->dev->dma_mask : ~((1ULL << 32) - 1);
resource_size_t aper_limit =
adev->gmc.aper_base + adev->gmc.aper_size - 1;
- bool p2p_access = !(pci_p2pdma_distance_many(adev->pdev,
+ bool p2p_access = !adev->gmc.xgmi.connected_to_cpu &&
+ !(pci_p2pdma_distance_many(adev->pdev,
&peer_adev->dev, 1, true) < 0);
return pcie_p2p && p2p_access && (adev->gmc.visible_vram_size &&