Re: [PATCH] pci: Only disable MSI/X and enable INTx if shutdown function has been called

[Prarit Bhargava <prarit@redhat.com>]

On 11/09/2016 02:54 PM, Keith Busch wrote:
> On Wed, Nov 09, 2016 at 02:36:23PM -0500, Prarit Bhargava wrote:
>>
>>
>> On 11/09/2016 12:05 PM, Bjorn Helgaas wrote:
>>> Hi Prarit,
>>>
>>> Is there a bugzilla or other archive of configuration/dmesg/other info
>>
>> [I have only added Bjorn and myself to the BZ below.  Please feel free to add
>> yourself.]
>>
>> Bjorn, unfortunately this won't be caught in a dmesg log because the filesystem
>> is unmounted by the time we shutdown the PCI devices in the halt/reboot path.
>>
>> The trace is only available from serial console, and I have opened up
>>
>> https://bugzilla.kernel.org/show_bug.cgi?id=187351
>>
>> to track this.
>>
>> I have added some additional links to other bugzillas which seem to show the
>> same behavior, and included a full serial console capture of the boot to the BZ.
>>  The end of the log shows the unhandled irq stack trace for irq 16.
> 
> Just researching where this came from, the behavior to shutdown msi/msix
> and enable intx was done in commit d52877c7b1 for some kexec issue,
> and I think that was wrong in the first place. We shouldn't be changing
> interrupt configuration out from under the drivers.

Yeah .. and it was RHEL specific?  Or at least it seems that way.

P.

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