linux-kernel - Re: [BUG 4.15-rc7] IRQ matrix management errors

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Date:   Thu, 18 Jan 2018 01:48:23 -0700
From:   Keith Busch <keith.busch@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     LKML <linux-kernel@...r.kernel.org>
Subject: Re: [BUG 4.15-rc7] IRQ matrix management errors

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
 parent:
    domain:  VECTOR
     hwirq:   0x30
     chip:    APIC
      flags:   0x0
     Vector:    69
     Target:     0