* FLR on AER
@ 2018-02-22 13:21 Jon Masters
2018-02-22 13:57 ` Sinan Kaya
0 siblings, 1 reply; 2+ messages in thread
From: Jon Masters @ 2018-02-22 13:21 UTC (permalink / raw)
To: helgaas; +Cc: linux-kernel, linux-pci
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: FLR on AER
2018-02-22 13:21 FLR on AER Jon Masters
@ 2018-02-22 13:57 ` Sinan Kaya
0 siblings, 0 replies; 2+ messages in thread
From: Sinan Kaya @ 2018-02-22 13:57 UTC (permalink / raw)
To: Jon Masters, helgaas; +Cc: linux-kernel, linux-pci
On 2/22/2018 8:21 AM, Jon Masters wrote:
> Hi Bjorn,
>
> It looks like the AER driver won’t do a device FLR but instead will default to progressively bigger hammers. Am I missing something?
>
AFAIK, AER driver does a secondary bus reset only if it observes a FATAL error. In order to
issue an FLR, driver needs to access the endpoint config space. Since there is a FATAL error,
this is not possible as PCI link is unreliable or probably gone.
> Jon.
>
--
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.
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