At Mon, 07 Nov 2011 11:35:49 +0100, Gerd Hoffmann wrote:

Hi,

...

We discuss Intel ICH/AC'97 (snd-intel8x0) here, but I hope that PCI SSID is same.

Hmm, it's not, the ac97 emulation doesn't use the default qemu subsystem id for some reason. Here is the entry:

[root@fedora ~]# lspci -vns6 00:06.0 0401: 8086:2415 (rev 01) Subsystem: 8086:0000 Physical Slot: 6 Flags: bus master, medium devsel, latency 0, IRQ 10 I/O ports at c000 [size=1K] I/O ports at c400 [size=256] Kernel driver in use: Intel ICH Kernel modules: snd-intel8x0

I guess that should be fixed. 8086:0000 isn't valid anyway and I doubt it serves any useful purpose other than avoiding a guest complaining about the subsystem id being unset.

Yeah, especially the value 0 looks pretty bad.

/me goes preparing a patch.

Thanks!

Takashi