diff options
| author | Oliver Upton <oupton@google.com> | 2022-04-09 18:45:46 +0000 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2022-05-03 21:30:20 +0100 |
| commit | e918e2bc52c8ac1cccd6ef822ac23eded41761b6 (patch) | |
| tree | 843d473fe466f7378747648b316defecba4c727d /tools/testing/selftests/kvm/include/aarch64/processor.h | |
| parent | selftests: KVM: Rename psci_cpu_on_test to psci_test (diff) | |
| download | linux-e918e2bc52c8ac1cccd6ef822ac23eded41761b6.tar.gz linux-e918e2bc52c8ac1cccd6ef822ac23eded41761b6.zip | |
selftests: KVM: Create helper for making SMCCC calls
The PSCI and PV stolen time tests both need to make SMCCC calls within
the guest. Create a helper for making SMCCC calls and rework the
existing tests to use the library function.
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220409184549.1681189-11-oupton@google.com
Diffstat (limited to 'tools/testing/selftests/kvm/include/aarch64/processor.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/aarch64/processor.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h index 8f9f46979a00..59ece9d4e0d1 100644 --- a/tools/testing/selftests/kvm/include/aarch64/processor.h +++ b/tools/testing/selftests/kvm/include/aarch64/processor.h @@ -185,4 +185,26 @@ static inline void local_irq_disable(void) asm volatile("msr daifset, #3" : : : "memory"); } +/** + * struct arm_smccc_res - Result from SMC/HVC call + * @a0-a3 result values from registers 0 to 3 + */ +struct arm_smccc_res { + unsigned long a0; + unsigned long a1; + unsigned long a2; + unsigned long a3; +}; + +/** + * smccc_hvc - Invoke a SMCCC function using the hvc conduit + * @function_id: the SMCCC function to be called + * @arg0-arg6: SMCCC function arguments, corresponding to registers x1-x7 + * @res: pointer to write the return values from registers x0-x3 + * + */ +void smccc_hvc(uint32_t function_id, uint64_t arg0, uint64_t arg1, + uint64_t arg2, uint64_t arg3, uint64_t arg4, uint64_t arg5, + uint64_t arg6, struct arm_smccc_res *res); + #endif /* SELFTEST_KVM_PROCESSOR_H */ |