Commit b97e9145 authored by Alex Sierra's avatar Alex Sierra Committed by Alex Deucher
Browse files

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: default avatarAlex Sierra <alex.sierra@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 2640174f

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

+2 −1
Original line number Diff line number Diff line
@@ -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 &&