Re: [Qemu-devel] How many msi-x vectors should be allocated for the virtio-serial device?

[Gal Hammer]

On 27/02/2013 14:35, Amit Shah wrote:
> On (Mon) 04 Feb 2013 [11:59:02], Michael S. Tsirkin wrote:
> > On Mon, Feb 04, 2013 at 10:42:32AM +0100, Paolo Bonzini wrote:
> > > Il 03/02/2013 13:11, Michael S. Tsirkin ha scritto:
> > > > > >   static Property virtio_serial_properties[] = {
> > > > > >       DEFINE_PROP_BIT("ioeventfd", VirtIOPCIProxy, flags, 
> > > > > > VIRTIO_PCI_FLAG_USE_IOEVENTFD_BIT, true),
> > > > > > -    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 
> > > > > > DEV_NVECTORS_UNSPECIFIED),
> > > > > > +    DEFINE_PROP_UINT32("vectors", VirtIOPCIProxy, nvectors, 2),
> > > > > >       DEFINE_PROP_HEX32("class", VirtIOPCIProxy, class_code, 0),
> > > > > >       DEFINE_VIRTIO_COMMON_FEATURES(VirtIOPCIProxy, host_features),
> > > > > >       DEFINE_PROP_UINT32("max_ports", VirtIOPCIProxy, 
> > > > > > serial.max_virtserial_ports, 31),
> > > > > >
> > > > > > plus the backwards-compatibility stuff.
> > > > > >
> > > > > > Paolo
> > > > Makes sense, but the logic in virtio_serial_init_pci is
> > > > then dead code and should go away.
> > >
> > > It won't be dead code for the backwards-compatible machine types (that
> > > use DEV_NVECTORS_UNSPECIFIED).
> > >
> > > Paolo
> >
> > Good point. Ack. Want to post this with proper signature etc?
>
> Gal, do you want to submit a patch for this?
>
>                 Amit

Attached.

    Gal.

0001-Set-virtio-serial-device-to-have-a-default-of-2-MSI-.patch
Description: Text document