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[vfio-users] about vfio lpc bridge



Hi Alex:
    
    Recently I am interested in igd passthrough. On the 'igd-assign' text, I don't understand why the lpc bridge need to be created ? 
Looking forward to your reply. Thanks.

qemu/hw/vfio/pci-quirk.c
    /* Create our LPC/ISA bridge */
    ret = vfio_pci_igd_lpc_init(vdev, lpc);
    if (ret) {
        error_report("IGD device %s failed to create LPC bridge, "
                     "legacy mode disabled", vdev->vbasedev.name);
        goto out;
    }

    /* Stuff some host values into the VM PCI host bridge */
    ret = vfio_pci_igd_host_init(vdev, host);
    if (ret) {
        error_report("IGD device %s failed to modify host bridge, "
                     "legacy mode disabled", vdev->vbasedev.name);
        goto out;
    }

fulaiyang


 



 


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