Re: [kvm-unit-tests GIT PULL 4/4] s390x: add CMM test during migration

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Quoting Thomas Huth (2023-01-05 13:24:03)
> On 05/01/2023 13.15, Claudio Imbrenda wrote:
> > From: Nico Boehr <nrb@xxxxxxxxxxxxx>
> > 
> > Add a test which modifies CMM page states while migration is in
> > progress.
> > 
> > This is added to the existing migration-cmm test, which gets a new
> > command line argument for the sequential and parallel variants.
> > 
> > Signed-off-by: Nico Boehr <nrb@xxxxxxxxxxxxx>
> > Reviewed-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
> > Link: https://lore.kernel.org/r/20221221090953.341247-2-nrb@xxxxxxxxxxxxx
> > Message-Id: <20221221090953.341247-2-nrb@xxxxxxxxxxxxx>
> > Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
> > ---
> >   s390x/migration-cmm.c | 258 +++++++++++++++++++++++++++++++++++++-----
> >   s390x/unittests.cfg   |  15 ++-
> >   2 files changed, 240 insertions(+), 33 deletions(-)
> 
>   Hi!
> 
> While this works fine on my z15 LPAR, I'm getting a failure when running 
> this test on my z13 LPAR:

I can _sometimes_ reproduce this on z16, z13 and misc older machines. The older the machine, the more often it seems to happen.

I think we may have a bug somewhere. While I investigate, feel free to leave out this patch if you prefer.




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