From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: no-carrier on qlogic 8242 10gig with linux
	3.x	running xen
Date: Thu, 29 Mar 2012 10:59:44 -0400
Message-ID: <20120329145944.GF12008@phenom.dumpdata.com>
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To: Kristoffer Harthing Egefelt <k@itoc.dk>
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On Thu, Mar 29, 2012 at 01:30:08AM -0700, Kristoffer Harthing Egefelt wrote:
> >Can you attach the /proc/interrupts please - for both Xen and baremetal.
> 
> *Bare metal:*
> CPU0       
> 0: 0 IR-IO-APIC-edge timer    
> 8: 0 IR-IO-APIC-edge rtc0    
> 9: 0 IR-IO-APIC-fasteoi acpi    
> 17: 0 IR-IO-APIC-fasteoi uhci_hcd:usb3, ata_piix   
> 18: 0 IR-IO-APIC-fasteoi uhci_hcd:usb4    
> 19: 0 IR-IO-APIC-fasteoi ehci_hcd:usb1    
> 20: 0 IR-IO-APIC-fasteoi uhci_hcd:usb6    
> 21: 0 IR-IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb5, uhci_hcd:usb7  
> 72: 0 DMAR_MSI-edge dmar0    
> 73: 0 IR-PCI-MSI-edge PCIe PME   
> 74: 0 IR-PCI-MSI-edge PCIe PME   
> 75: 0 IR-PCI-MSI-edge PCIe PME   
> 76: 0 IR-PCI-MSI-edge PCIe PME   
> 77: 0 IR-PCI-MSI-edge megasas    
> 78: 0 IR-PCI-MSI-edge eth0[0]    
> 79: 0 IR-PCI-MSI-edge eth0[1]    
> 80: 0 IR-PCI-MSI-edge eth0[2]    
> 81: 0 IR-PCI-MSI-edge eth0[3]    
> 82: 0 IR-PCI-MSI-edge eth1[0]    
> 83: 0 IR-PCI-MSI-edge eth1[1]    
> 84: 0 IR-PCI-MSI-edge eth1[2]    
> 85: 0 IR-PCI-MSI-edge eth1[3]    
> NMI: 0 Non-maskable interrupts    
> LOC: 1288 Local timer interrupts   
> SPU: 0 Spurious interrupts    
> PMI: 0 Performance monitoring interrupts   
> IWI: 0 IRQ work interrupts   
> RES: 295 Rescheduling interrupts    
> CAL: 675 Function call interrupts   
> TLB: 5 TLB shootdowns    
> TRM: 0 Thermal event interrupts   
> THR: 0 Threshold APIC interrupts   
> MCE: 0 Machine check exceptions   
> MCP: 2 Machine check polls   
> ERR:       
> MIS:       
> 
> *Xen:*
> CPU0
> 8: 0 xen-pirq-ioapic-edge rtc0
> 9: 0 xen-pirq-ioapic-level acpi
> 17: 0 xen-pirq-ioapic-level ata_piix, uhci_hcd:usb3
> 18: 0 xen-pirq-ioapic-level uhci_hcd:usb4
> 19: 0 xen-pirq-ioapic-level ehci_hcd:usb1
> 20: 0 xen-pirq-ioapic-level uhci_hcd:usb6
> 21: 0 xen-pirq-ioapic-level ehci_hcd:usb2, uhci_hcd:usb5, uhci_hcd:usb7
> 304: 0 xen-percpu-virq timer0
> 305: 0 xen-percpu-ipi resched0
> 306: 0 xen-percpu-ipi callfunc0
> 307: 0 xen-percpu-virq debug0
> 308: 0 xen-percpu-ipi callfuncsingle0
> 424: 0 xen-dyn-event xenbus
> 425: 0 xen-pirq-msi PCIe PME
> 426: 0 xen-pirq-msi PCIe PME
> 427: 0 xen-pirq-msi PCIe PME
> 428: 0 xen-pirq-msi PCIe PME


So something is bogus here. There should be a bunch of ethX[Y] - and
it looks like the MSI's just didn't get setup.

What kernel version are you using?

> 430: 0 xen-pirq-msi-x megasas

Hm, but the megasas got an MSI, so... this really looks like something
of the driver and Linux kernel (and the Xen PCI code) not working well.