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From: Alex G <mr.nuke.me@gmail.com>
To: Alex Williamson <alex.williamson@redhat.com>,
	bhelgaas@google.com, helgaas@kernel.org,
	linux-pci@vger.kernel.org
Cc: austin_bolen@dell.com, alex_gagniuc@dellteam.com,
	keith.busch@intel.com, Shyam_Iyer@Dell.com, lukas@wunner.de,
	okaya@kernel.org, torvalds@linux-foundation.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] PCI/LINK: Account for BW notification in vector calculation
Date: Tue, 23 Apr 2019 12:59:26 -0500	[thread overview]
Message-ID: <abe311e9-85e6-27a6-e6ad-d7e8e103578f@gmail.com> (raw)
In-Reply-To: <155597243666.19387.1205950870601742062.stgit@gimli.home>



On 4/22/19 5:43 PM, Alex Williamson wrote:
> On systems that don't support any PCIe services other than bandwidth
> notification, pcie_message_numbers() can return zero vectors, causing
> the vector reallocation in pcie_port_enable_irq_vec() to retry with
> zero, which fails, resulting in fallback to INTx (which might be
> broken) for the bandwidth notification service.  This can resolve
> spurious interrupt faults due to this service on some systems.
> 
> Fixes: e8303bb7a75c ("PCI/LINK: Report degraded links via link bandwidth notification")
> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
> ---

+1
Tested on some Dell servers. Everything works as expected. I don't have 
a system with a device that only supports bandwidth notification.

Alex

  parent reply	other threads:[~2019-04-23 17:59 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-22 22:43 [PATCH] PCI/LINK: Account for BW notification in vector calculation Alex Williamson
2019-04-23  0:05 ` Alex G
2019-04-23  0:33   ` Alex Williamson
2019-04-23 14:33     ` Alex G
2019-04-23 15:34       ` Alex Williamson
2019-04-23 15:49         ` Lukas Wunner
2019-04-23 16:03         ` Alex G
2019-04-23 16:22           ` Alex Williamson
2019-04-23 16:27             ` Alex G
2019-04-23 16:37               ` Alex Williamson
2019-04-23 17:10       ` Bjorn Helgaas
2019-04-23 17:53         ` Alex G
2019-04-23 18:38           ` Alex Williamson
2019-04-23 17:59 ` Alex G [this message]
2019-05-01 20:30 ` Bjorn Helgaas

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