Am 2021-04-29 um 5:34 a.m. schrieb Jonathan Kim:
> GPUs connected to CPUs over xGMI are bidirectional so set weight by a
> single hop both ways.
>
> Signed-off-by: Jonathan Kim <jonathan.kim@xxxxxxx>
> Tested-by: Ramesh Errabolu <ramesh.errabolu@xxxxxxx>
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdkfd/kfd_crat.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> index eb30324393a8..ca90b710d76a 100644
> --- a/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> +++ b/drivers/gpu/drm/amd/amdkfd/kfd_crat.c
> @@ -1789,6 +1789,7 @@ static int kfd_fill_gpu_direct_io_link_to_cpu(int *avail_size,
> */
> sub_type_hdr->flags |= CRAT_IOLINK_FLAGS_BI_DIRECTIONAL;
> sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_XGMI;
> + sub_type_hdr->num_hops_xgmi = 1;
> } else {
> sub_type_hdr->io_interface_type = CRAT_IOLINK_TYPE_PCIEXPRESS;
> }
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