The NVIDIA GB10 GPU (device ID 0x2e12, found in DGX GB10 systems) is a Grace-Blackwell chip that shares the same NVLink-C2C coherent memory architecture as the existing GH200/GB200/GB300 entries. It exposes CPU-coherent device memory via the ACPI DSD properties nvidia,gpu-mem-base-pa / nvidia,gpu-mem-size and requires the same specialised BAR emulation provided by nvgrace-gpu-vfio-pci. Without this entry the device falls through to the generic vfio-pci driver, which fails the iommufd IOMMU_RESV_DIRECT check because the NVLink-C2C memory apertures appear as RESV_DIRECT in the IOMMU group reserved regions, yielding: vfio-pci 000f:01:00.0: Firmware has requested this device have a 1:1 IOMMU mapping, rejecting configuring the device without a 1:1 mapping. Contact your platform vendor. Tested on a DGX GB10 system (aarch64, kernel 6.17.0-1014-nvidia). Signed-off-by: Eric Curtin --- drivers/vfio/pci/nvgrace-gpu/main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/vfio/pci/nvgrace-gpu/main.c b/drivers/vfio/pci/nvgrace-gpu/main.c index fa056b69f899..ac1acf41df86 100644 --- a/drivers/vfio/pci/nvgrace-gpu/main.c +++ b/drivers/vfio/pci/nvgrace-gpu/main.c @@ -1244,6 +1244,8 @@ static const struct pci_device_id nvgrace_gpu_vfio_pci_table[] = { { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_NVIDIA, 0x2941) }, /* GB300 SKU */ { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_NVIDIA, 0x31C2) }, + /* GB10 SKU */ + { PCI_DRIVER_OVERRIDE_DEVICE_VFIO(PCI_VENDOR_ID_NVIDIA, 0x2E12) }, {} }; -- 2.43.0