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The PMU test commandline option takes an argument to disable a certain test. The initial assumption behind this was a common use case is just to run all the test most of the time. However, running a single test seems more useful instead. Especially, the overflow test has been helpful to validate PMU virtualizaiton interrupt changes. Switching the command line option to run a single test instead of disabling a single test also allows to provide additional test specific arguments to the test. The default without any options remains unchanged which continues to run all the tests. Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Atish Patra <atishp@rivosinc.com> Link: https://lore.kernel.org/r/20250303-kvm_pmu_improve-v2-3-41d177e45929@rivosinc.com Signed-off-by: Anup Patel <anup@brainfault.org>