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: Tue, 12 Apr 2016 21:32:01 +0000 (UTC)
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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.

Thanks,
Greg