Re: [Qemu-devel] [PATCH] Docs: Introduce multiport serial support in qemupciserial.inf

[Michael S. Tsirkin]

On Wed, Jan 08, 2014 at 05:11:48PM +0100, Paolo Bonzini wrote:
> Il 08/01/2014 16:07, Yan Vugenfirer ha scritto:
> >>>
> >>> +%QEMU-PCI_SERIAL_1_PORT%=ComPort_inst1,
> >>> PCI\VEN_1B36&DEV_0002&SUBSYS_11001AF4&REV_01
> >>> +%QEMU-PCI_SERIAL_2_PORT%=ComPort_inst2,
> >>> PCI\VEN_1B36&DEV_0003&SUBSYS_11001AF4&REV_01
> >>> +%QEMU-PCI_SERIAL_4_PORT%=ComPort_inst4,
> >>> PCI\VEN_1B36&DEV_0004&SUBSYS_11001AF4&REV_01
> >>
> >> I think checking the subsystem is not necessary (and I think downstreams
> >> could legitimately change it).  Can you check CC and REV but not SUBSYS?
> > 
> > PNP ID can be reduced to vendor and device ID only, for example:
> > PCI\VEN_1B36&DEV_0002 . But in this case we cannot check revision.
> 
> Gerd, Michael, what do you think is better?  Not check revision, or
> enforcing subsystem?
> 
> Paolo

AFAIK the 0.9.X spec explicitly says you should look at subsystem.


-- 
MST