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Re: [Xen-devel] Please apply "partially revert "xen: Remove event channel..."



On 04/07/2017 01:36 PM, Stefano Stabellini wrote:
> On Fri, 7 Apr 2017, Boris Ostrovsky wrote:
>> On 04/07/2017 07:58 AM, Ian Jackson wrote:
>>> tl;dr:
>>>  Please apply
>>>
>>>     da72ff5bfcb02c6ac8b169a7cf597a3c8e6c4de1
>>>     partially revert "xen: Remove event channel notification through
>>>       Xen PCI platform device"
>>>
>>>  to all stable branches which have a version of the original broken
>>>  commit.  This includes at least 4.9.y.
>>>
>>> Background:
>>>
>>> osstest service owner writes ("[linux-4.9 baseline test] 107238: tolerable 
>>> FAIL"):
>>> ...
>>>>  test-amd64-amd64-qemuu-nested-intel 13 xen-boot/l1  fail never pass
>>> osstest doesn't consider this a regresion because it looks for
>>> regressions within a branch, and this is the first test of Linux 4.9.
>>> However, this is a regression from the kernel we are currently using.
>>>
>>> L1 dom0 console log:
>>>   
>>> http://logs.test-lab.xenproject.org/osstest/logs/107238/test-amd64-amd64-qemuu-nested-intel/huxelrebe0---var-log-xen-osstest-serial-l1.guest.osstest.log
>>>
>>> It seems to have got stuck halfway through booting.
>>>
>>> The message
>>>   (XEN) *** Serial input -> Xen (type 'CTRL-x' three times to switch input 
>>> to DOM0)
>>> shows where osstest timed out on this test, and started its log
>>> capture process (including collecting debug key output).
>>>
>>> Complete logs for this job here:
>>>   
>>> http://logs.test-lab.xenproject.org/osstest/logs/107238/test-amd64-amd64-qemuu-nested-intel/info.html
>>>
>>> Juergen Gross tells me that this is due to the lack of
>>> da72ff5bfcb02c6ac8b169a7cf597a3c8e6c4de1.
>>>
>>> Thanks,
>>> Ian.
>>>
>>> PS: Stefano, Boris: did you already request a backport of this commit?
>>> If not, why not ?
>> No, but this should indeed be backported to 4.9+
> Boris, are you going to do that?

Is there anything that needs to be done beyond just applying it to 4.9
(4.10 apparently already has it).

-boris


>
> While we wait for the kernel.org stable maintainers to do the backport,
> would it help OSSTest if I backported
> da72ff5bfcb02c6ac8b169a7cf597a3c8e6c4de1 to the linux-arm-xen branch
> myself now?


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