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
