<div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial"><div style="line-height:1.7;color:#000000;font-size:14px;font-family:Arial">Hi Alex:</div><div style="line-height: 1.7; font-family: Arial;"> <br> R<span style="color: rgb(51, 51, 51); font-size: 14px; font-family: Arial, "Microsoft YaHei", "\\5FAE软雅黑", "\\5B8B体", "Malgun Gothic", Meiryo, sans-serif; font-variant-numeric: normal; font-variant-east-asian: normal; line-height: 21px;">ecently I am interested in igd passthrough. On the 'igd-assign' text, I don't understand why the lpc bridge need to be created ? </span></div><div style="line-height: 1.7;"><font color="#333333" face="Arial, Microsoft YaHei, \\5FAE软雅黑, \\5B8B体, Malgun Gothic, Meiryo, sans-serif">Looking forward to your reply. Thanks.</font></div><div style="line-height: 1.7;"><font color="#333333" face="Arial, Microsoft YaHei, \\5FAE软雅黑, \\5B8B体, Malgun Gothic, Meiryo, sans-serif"><br></font>qemu/hw/vfio/pci-quirk.c</div><div style="line-height: 1.7;"><div style="line-height: 1.7;"><i> /* Create our LPC/ISA bridge */</i></div><div style="line-height: 1.7;"><i> ret = vfio_pci_igd_lpc_init(vdev, lpc);</i></div><div style="line-height: 1.7;"><i> if (ret) {</i></div><div style="line-height: 1.7;"><i> error_report("IGD device %s failed to create LPC bridge, "</i></div><div style="line-height: 1.7;"><i> "legacy mode disabled", vdev->vbasedev.name);</i></div><div style="line-height: 1.7;"><i> goto out;</i></div><div style="line-height: 1.7;"><i> }</i></div><div style="line-height: 1.7;"><br></div><div style="line-height: 1.7;"><i> /* Stuff some host values into the VM PCI host bridge */</i></div><div style="line-height: 1.7;"><i> ret = vfio_pci_igd_host_init(vdev, host);</i></div><div style="line-height: 1.7;"><i> if (ret) {</i></div><div style="line-height: 1.7;"><i> error_report("IGD device %s failed to modify host bridge, "</i></div><div style="line-height: 1.7;"><i> "legacy mode disabled", vdev->vbasedev.name);</i></div><div style="line-height: 1.7;"><i> goto out;</i></div><div style="line-height: 1.7;"><i> }</i></div><br>fulaiyang<blockquote id="isReplyContent" style="font-family: Arial; color: rgb(0, 0, 0); font-size: 14px; padding-left: 1ex; margin: 0px 0px 0px 0.8ex; border-left: 1px solid rgb(204, 204, 204);"> </blockquote></div><br><br><span title="neteasefooter"><p> </p></span></div><br><br><span title="neteasefooter"><p> </p></span>