Michael S. Tsirkin wrote:
> MSI is an optional feature so things are supposed to work even without MSI - are
> you getting that great a benefit from MSI?
>   

Not great, I would say small.

> All mellanox PCI-X devices have a bridge inside them, so ...
>   

Ok so you really need something for 2.6.17. What about the attached
patch to fix the fact that bus flags are not inherited ?

Signed-off-by: Brice Goglin <brice@myri.com>

> Doesn't seem to work for me:
>
> ib_mthca: Initializing 0000:04:00.0
> GSI 18 sharing vector 0xB9 and IRQ 18
> ACPI: PCI Interrupt 0000:04:00.0[A] -> GSI 29 (level, low) -> IRQ 185
> ib_mthca 0000:04:00.0: NOP command failed to generate interrupt (IRQ 217),
> aborting.
> ib_mthca 0000:04:00.0: Try again with MSI/MSI-X disabled.
> ACPI: PCI interrupt for device 0000:04:00.0 disabled
> ib_mthca: probe of 0000:04:00.0 failed with error -16
>   

Ok. Do you at least see the quirk message ?

Thanks,
Brice