Re: [Xen-devel] Interrupt forwarding

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 12 Mar 2005, at 20:07, Jon Smirl wrote:

> [jonsmirl@jonsmirl proc]$ cat interrupts
>            CPU0       CPU1
>   0:     484259     448188    IO-APIC-edge  timer
>   8:          0          0    IO-APIC-edge  rtc
>   9:          0          0   IO-APIC-level  acpi
>  14:        776        762    IO-APIC-edge  ide0
>  15:       8040       7726    IO-APIC-edge  ide1
> 169:      37509          0   IO-APIC-level  libata, uhci_hcd:usb4, eth0
> 185:          5          0   IO-APIC-level  ehci_hcd:usb1
> 193:        548        272   IO-APIC-level  uhci_hcd:usb2, 
> uhci_hcd:usb5
> 201:          0          0   IO-APIC-level  uhci_hcd:usb3
> 209:          3          0   IO-APIC-level  ohci1394
> NMI:          0          0
> LOC:     932357     932306
> ERR:          0
> MIS:          0
Bizarre. Not only routed through an I/O APIC, but the IRQ numbers are 
large enough to probably be MSI vectors. Perhaps the mobo layout has 
legacy PCI slots sharing IRQ lines before reaching MSI logic in the 
chipset? Putting network on the same line as anything else is very 
sucky.  Is this really a server-class board?
 -- Keir



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