From 413dd2fc603b18566e0d8cd6e79acf1ae292808a Mon Sep 17 00:00:00 2001 From: Simon Louis Date: Tue, 3 Feb 2026 15:42:00 +0000 Subject: [PATCH] drm/amdgpu: Add xgmi link status for VFs Xgmi link status is unavailable in guest. This patch returns AMDGPU_XGMI_LINK_NA for VFs. Signed-off-by: Simon Louis Signed-off-by: Lijo Lazar Reviewed-by: Asad Kamal Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 3 +++ drivers/gpu/drm/amd/include/kgd_pp_interface.h | 2 ++ 2 files changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c index 11e56df1d91b7..1f7d4220296e9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c @@ -347,6 +347,9 @@ int amdgpu_get_xgmi_link_status(struct amdgpu_device *adev, int global_link_num) { u32 xgmi_state_reg_val; + if (amdgpu_sriov_vf(adev)) + return AMDGPU_XGMI_LINK_NA; + if (adev->gmc.xgmi.num_physical_nodes <= 1) return -EINVAL; diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h index 6683ffd6aa681..bdf8e6ff556cf 100644 --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h @@ -1832,6 +1832,8 @@ struct amdgpu_partition_metrics_v1_1 { enum amdgpu_xgmi_link_status { AMDGPU_XGMI_LINK_INACTIVE = 0, AMDGPU_XGMI_LINK_ACTIVE = 1, + /* Status not available */ + AMDGPU_XGMI_LINK_NA = 2, }; #endif -- 2.47.3