Re: [Qemu-devel] [v6][PATCH 07/10] xen, gfx passthrough: register a isa bridge

[Chen, Tiejun]

+
+    if (pch_dev_id == 0xffff) {
+        fprintf(stderr, "unsupported PCH!\n");

I would drop this fprintf: this likely means a newer
card, so the bridge is not necessary.

Okay.

+        return;
+    }
+
+    /* Currently IGD drivers always need to access PCH by 1f.0. */
+    pci_dev = pci_create_simple(d->bus, PCI_DEVFN(0x1f, 0),
+                                "xen-igd-passthrough-isa-bridge");
+
+    /*
+     * Identify PCH card with its own real vendor/device ids.

This no longer holds I think.

You're right.

Thanks
Tiejun