Re: [Xen-devel] ACPI shutdown unreliable with win7?

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

On 29/05/15 15:00, Ian Campbell wrote:
> On Fri, 2015-05-29 at 14:28 +0100, Jan Beulich wrote:
>>>>> On 29.05.15 at 15:14, <andrew.cooper3@xxxxxxxxxx> wrote:
>>> On 29/05/15 14:04, Jan Beulich wrote:
>>>>>>> On 29.05.15 at 14:54, <ian.campbell@xxxxxxxxxx> wrote:
>>>>> On Fri, 2015-05-22 at 10:08 +0100, Ian Campbell wrote:
>>>>>> If win7 doesn't shutdown given a power button request I'd be more
>>>>>> inclined to remove the setting in osstest for those flights and let
>>>>>> guest-stop go back to being never pass than to start making such changes
>>>>>> to the VM config which I think would probably break the preceding
>>>>>> suspend and migration tests (which aren't completely reliable, but are
>>>>>> far more so than this shutdown one).
>>>>> Does anyone have any ideas here or shall I propose:
>>>> Unless we have a way to make an adjustment inside the guest for the
>>>> power button to gain "shutdown" meaning, I think there's no alternative
>>>> to the change below.
>>> You can avoid advertising S3/S4 in the ACPI tables, which iirc causes
>>> the same alteration to happen.
>>>
>>> Hvmloader uses the platform/acpi_s{3,4} booleans to control whether the
>>> relevant SSDTs are exposed.
>> Which libxl even has settings for. That would perhaps be a better first
>> try than disabling ACPI shutdown.
> I've mentioned it at least twice now but nobody seems to think it is of
> note that even with the current settings it does the right thing about 1
> time in 10? Is Win7 really expected to behave so randomly here? 

Windows is far from bug free, and also a black box.  I really cannot
answer whether this is intended behaviour or not.

>
> Also, when the test fails the guest is also not hibernating either.
>
> Plus I've queried the impact of change the ACPI s3/s4 settings on the
> save/restore/migrate tests in the flight more than once and nobody has
> responded to that either.

save/restore/migrate necessarily need PV drivers inside the guest, and
installing PV drivers should set the sane defaults inside the guest.

What does OSSTest do with PV drivers?

~Andrew

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