Re: [kvm-unit-tests PATCH] powerpc: Add SPRs migration test

[Thomas Huth <thuth@redhat.com>]

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.

 Thomas