On Thu, 2012-11-29 at 10:42 +0200, Alex Lyakas wrote: > Hi Alex, > did I understand correctly that "vector" value with which the call to > request_threaded_irq() is made is *not* supposed to be zero? Because in my > case, it is always zero, and still the failure I observe is not happening > always. Usually, 3 unique (non-zero) IRQ numbers are assigned to each > attached PCI device of each KVM VM. > I will try to repro this like you suggested and let you know. pci_enable_msix should be setting vectors for all the host_msix_entries. That non-zero vector is the first parameter to request_threaded_irq. If I put a printk in the loop installing the interrupt handler, I get: assigned_device_enable_host_msix entry 0, vector 44 assigned_device_enable_host_msix entry 0, vector 44 assigned_device_enable_host_msix entry 1, vector 45 assigned_device_enable_host_msix entry 0, vector 44 assigned_device_enable_host_msix entry 1, vector 45 assigned_device_enable_host_msix entry 2, vector 103 So we enable MSI-X with only one vector enabled, then a second vector gets enabled and we disable and re-enable with two, and so on with three. This is for an assigned e1000e device. Thanks, Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
