From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg Harmon <gharm@google.com>
Subject: Re: [kvm-unit-tests PATCH] powerpc: Add SPRs migration test
Date: Thu, 14 Apr 2016 09:43:10 -0700
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On Thu, Apr 14, 2016 at 1:18 AM, Thomas Huth <thuth@redhat.com> wrote:
> On 12.04.2016 23:32, Greg Harmon wrote:
>> David Gibson <dgibson <at> redhat.com> writes:
>>> On Mon, 11 Apr 2016 11:23:46 +0200
>>> Thomas Huth <thuth <at> redhat.com> wrote:
>>>> On 11.04.2016 03:55, David Gibson wrote:
>>>>> On Fri,  8 Apr 2016 13:35:29 +0200
>>>>> Thomas Huth <thuth <at> redhat.com> wrote:
>>>>>
>>>>>> This test can be used to check whether the SPR (special purpose
>>>>>> registers) of the PowerPC CPU are migrated right. It first fills
>>>>>> the various SPRs with some non-zero value, then reads the values
>>>>>> back into a first array, then waits for a key (with the '-w' option)
>>>>>> so that it is possible to migrate the VM, and finally reads the
>>>>>> values from the SPRs back into another array and then compares it
>>>>>> with the initial values.
>>
>> Hi,
>> In order to make this test automated, what if we extend the test device to
>> return a save/restore generation number? It can report that in a
>> register,and then the test can spin, waiting for that value to increase.
>
> The test device only works on x86, as far as I know, so I'm afraid it's
> not usable for this case here on PowerPC.

That's too bad that test device doesn't run on PowerPC.  I'll try to
send a patch sometime to add this type of register to the test device.

Thanks,
Greg

>
>  Thomas
>