GIM: init VF VRAM/GTT usage to sentinel on the SR-IOV host#79
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Jul 21, 2026
GIM host does not observe per-VCN/JPEG activity, XGMI link rx/tx, PCIe rx/tx bytes, or per-VF VRAM/GTT usage. Sentinel-init these structs before fill so DME reports NA instead of a bogus 0 that failed test_metric_coverage; fields the stream populates overwrite the sentinel. Mirrors the baremetal idiom in amdsmi/smi_api.cc.
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Per-VF VRAM and GTT usage is not exposed to the host over SR-IOV, so the GIM host path cannot fill these fields. Sentinel-init stats->vram_usage so the unsupported members report NA in the exporter instead of a misleading 0 (total_vram is filled separately from vram_status). Mirrors the baremetal per-struct sentinel-init idiom.
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