On Thu, 18 Jan 2018, Keith Busch wrote:
> On Thu, Jan 18, 2018 at 09:10:43AM +0100, Thomas Gleixner wrote:
> > Can you please provide the output of
> >
> > # cat /sys/kernel/debug/irq/irqs/$ONE_I40_IRQ
>
> # cat /sys/kernel/debug/irq/irqs/48
> handler: handle_edge_irq
> device: 0000:1a:00.0
> status: 0x00000000
> istate: 0x00000000
> ddepth: 0
> wdepth: 0
> dstate: 0x05401200
> IRQD_ACTIVATED
> IRQD_IRQ_STARTED
> IRQD_SINGLE_TARGET
> IRQD_AFFINITY_SET
> IRQD_CAN_RESERVE
> node: 0
> affinity: 0-27,56-83
> effectiv: 0
> pending:
> domain: PCI-MSI-2
> hwirq: 0xd00002
> chip: PCI-MSI
> flags: 0x10
> IRQCHIP_SKIP_SET_WAKE
Bah. That's MSI where we can't use interrupt reservation because we cant
mask MSI vectors. I really admire these designed by committee hardware
bogosities.
Thanks,
tglx
