diff --git a/sw/nic/gpuagent/api/smi/gimamdsmi/smi_api.cc b/sw/nic/gpuagent/api/smi/gimamdsmi/smi_api.cc
index 9f5b0db1..662730e2 100644
--- a/sw/nic/gpuagent/api/smi/gimamdsmi/smi_api.cc
+++ b/sw/nic/gpuagent/api/smi/gimamdsmi/smi_api.cc
@@ -1096,6 +1096,16 @@ smi_gpu_fill_stats (aga_gpu_handle_t gpu_handle_in,
 
     AGA_SMI_SESSION_GUARD(gpu_key, gpu_handle_in);
 
+    // host-unsupported fields: sentinel-init so DME reports NA, not a bogus 0
+    memset(&stats->usage, 0xff, sizeof(aga_gpu_usage_t));
+    memset(&stats->pcie_stats, 0xff, sizeof(aga_gpu_pcie_stats_t));
+    memset(&stats->xgmi_link_stats, 0xff,
+           sizeof(aga_gpu_xgmi_link_stats_t) * AGA_GPU_MAX_XGMI_LINKS);
+    // per-VF VRAM/GTT usage is not exposed to the host over SR-IOV; init to the
+    // sentinel so unsupported fields report NA (total_vram is filled separately
+    // from vram_status). Mirrors the baremetal per-struct sentinel-init idiom.
+    memset(&stats->vram_usage, 0xff, sizeof(stats->vram_usage));
+
     // fill the power and voltage info
     amdsmi_ret = amdsmi_get_power_info(gpu_handle, &power_info);
     if (unlikely(amdsmi_ret != AMDSMI_STATUS_SUCCESS)) {