On Saturday 04 April 2009 05:27:43 Alex Williamson wrote:
> On Tue, 2009-03-17 at 11:50 +0800, Sheng Yang wrote:
> > + if (*ctrl_word & PCI_MSIX_ENABLE) {
> > + if (assigned_dev_update_msix_mmio(pci_dev) < 0) {
> > + perror("assigned_dev_update_msix_mmio");
> > + return;
> > + }
> > + if (kvm_assign_irq(kvm_context, &assigned_irq_data) < 0) {
> > + perror("assigned_dev_enable_msix: assign irq");
> > + return;
> > + }
> > + assigned_dev->irq_requested_type = assigned_irq_data.flags;
> > + }
> > +}
>
> Do we need some disable logic here? If I toggle a bnx2 NIC in a guest,
> I get the following when it attempts to come back up:
>
> MSI-X entry number is zero!
> assigned_dev_update_msix_mmio: No such device or address
It seems that driver didn't fill the MMIO with any correct MSIX information,
or the program fail to intercept it after driver set enable bit of MSIX. It's
strange... (Have it got something to do with PM and some EXP feature you
mentioned?)
Could you enable DEVICE_ASSSIGNMENT_DEBUG=1 in qemu/hw/device-assignment.c and
post the output?
Thanks!
--
regards
Yang, Sheng
> Thanks,
>
> Alex
>
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