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/lib/aarch64/processor.c | |
| parent | selftests: KVM: Rename psci_cpu_on_test to psci_test (diff) | |
| download | linux-dev-e918e2bc52c8ac1cccd6ef822ac23eded41761b6.tar.xz linux-dev-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/lib/aarch64/processor.c')
| -rw-r--r-- | tools/testing/selftests/kvm/lib/aarch64/processor.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/lib/aarch64/processor.c b/tools/testing/selftests/kvm/lib/aarch64/processor.c index 9343d82519b4..6a041289fa80 100644 --- a/tools/testing/selftests/kvm/lib/aarch64/processor.c +++ b/tools/testing/selftests/kvm/lib/aarch64/processor.c @@ -500,3 +500,28 @@ void __attribute__((constructor)) init_guest_modes(void) { guest_modes_append_default(); } + +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) +{ + asm volatile("mov w0, %w[function_id]\n" + "mov x1, %[arg0]\n" + "mov x2, %[arg1]\n" + "mov x3, %[arg2]\n" + "mov x4, %[arg3]\n" + "mov x5, %[arg4]\n" + "mov x6, %[arg5]\n" + "mov x7, %[arg6]\n" + "hvc #0\n" + "mov %[res0], x0\n" + "mov %[res1], x1\n" + "mov %[res2], x2\n" + "mov %[res3], x3\n" + : [res0] "=r"(res->a0), [res1] "=r"(res->a1), + [res2] "=r"(res->a2), [res3] "=r"(res->a3) + : [function_id] "r"(function_id), [arg0] "r"(arg0), + [arg1] "r"(arg1), [arg2] "r"(arg2), [arg3] "r"(arg3), + [arg4] "r"(arg4), [arg5] "r"(arg5), [arg6] "r"(arg6) + : "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7"); +} |