From: Thomas Gleixner <tglx@linutronix.de>
To: Keith Busch <keith.busch@intel.com>
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: Re: [BUG 4.15-rc7] IRQ matrix management errors
Date: Thu, 18 Jan 2018 10:06:14 +0100 (CET) [thread overview]
Message-ID: <alpine.DEB.2.20.1801181004000.1847@nanos> (raw)
In-Reply-To: <20180118084822.GJ7562@localhost.localdomain>
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
next prev parent reply other threads:[~2018-01-18 9:06 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20180115025759.GG13580@localhost.localdomain>
2018-01-15 3:02 ` Keith Busch
2018-01-15 9:13 ` Thomas Gleixner
2018-01-16 6:16 ` Keith Busch
2018-01-16 7:11 ` Keith Busch
2018-01-16 10:33 ` Thomas Gleixner
2018-01-16 11:20 ` Thomas Gleixner
2018-01-16 14:26 ` Keith Busch
2018-01-17 2:25 ` Keith Busch
2018-01-17 7:34 ` Thomas Gleixner
2018-01-17 7:55 ` Keith Busch
2018-01-17 9:24 ` Thomas Gleixner
2018-01-17 9:32 ` Thomas Gleixner
2018-01-17 14:24 ` Keith Busch
2018-01-17 15:01 ` Thomas Gleixner
2018-01-18 2:37 ` Keith Busch
2018-01-18 8:10 ` Thomas Gleixner
2018-01-18 8:48 ` Keith Busch
2018-01-18 9:06 ` Thomas Gleixner [this message]
2018-01-18 10:43 ` [tip:irq/urgent] irq/matrix: Spread interrupts on allocation tip-bot for Thomas Gleixner
2018-01-17 11:15 ` [tip:x86/urgent] x86/apic/vector: Fix off by one in error path tip-bot for Thomas Gleixner
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