Re: [kvm-unit-tests PATCH v4 0/2] powerpc: Test SPR persistency during migration

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On 22/03/2017 09:28, Thomas Huth wrote:
> Here's a KVM-unit-test to check the persistency of SPRs during migration.
> First patch adds a helper script for doing migration tests in the
> kvm-unit-test framework, and the second patch contains the SPR tester.
> 
> v4:
> - Fix the error paths in run_migration() - use "exit 2" instead of "exit 1"
>   to avoid trouble with the return code magic in the powerpc/run script
>   and make sure to terminate the two QEMU instances in case of migration
>   failure.
> 
> v3:
> - Migration shell script code has been moved to a helper function in
>   arch-run.bash, so that this now also works with the standalone tests.
> - Introduced the helper function migration_cmd there, too, so that other
>   architectures can use this, too.
> - Use "$@" instead of $* when calling QEMU.
> 
> v2:
> - Addressed review feedback from v1
> - Now using cpu_relax() instead of asm volatile ("nop")
> 
> Thomas Huth (2):
>   Add the possibility to do simple migration tests
>   powerpc: Add Special Purpose Register persistency test
> 
>  powerpc/Makefile.common |   3 +-
>  powerpc/cstart64.S      |   2 +
>  powerpc/run             |   2 +-
>  powerpc/sprs.c          | 304 ++++++++++++++++++++++++++++++++++++++++++++++++
>  powerpc/unittests.cfg   |   5 +
>  scripts/arch-run.bash   |  63 ++++++++++
>  scripts/runtime.bash    |   3 +
>  7 files changed, 380 insertions(+), 2 deletions(-)
>  create mode 100644 powerpc/sprs.c
> 

Really nice work.

I've tested with TCG and KVM HV and it works fine.

It hangs with KVM PR, but I have an "emulation at f60 failed (00000000)"
in kernel logs, did you see that?

Laurent



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