On 9/4/2025 2:54 PM, Sagi Shahar wrote:
> From: Isaku Yamahata <isaku.yamahata@intel.com>
>
> Make sure that all the attributes enabled by the test are reported as
> supported by the TDX module.
>
> This also exercises the KVM_TDX_CAPABILITIES ioctl.
>
> Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
> Co-developed-by: Sagi Shahar <sagis@google.com>
> Signed-off-by: Sagi Shahar <sagis@google.com>
> ---
> tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c
> index aa0cb6c2205b..1b5c01faf1cd 100644
> --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c
> +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c
> @@ -234,6 +234,18 @@ static void vm_tdx_filter_cpuid(struct kvm_vm *vm,
> free(tdx_cap);
> }
>
> +static void tdx_check_attributes(struct kvm_vm *vm, uint64_t attributes)
> +{
> + struct kvm_tdx_capabilities *tdx_cap;
> +
> + tdx_cap = tdx_read_capabilities(vm);
> +
> + /* Make sure all the attributes are reported as supported by the TDX module */
I think "by the TDX module" can be dropped, since KVM only reports the
attributes it supports.
> + TEST_ASSERT_EQ(attributes & tdx_cap->supported_attrs, attributes);
> +
> + free(tdx_cap);
> +}
> +
> void vm_tdx_init_vm(struct kvm_vm *vm, uint64_t attributes)
> {
> struct kvm_tdx_init_vm *init_vm;
> @@ -253,6 +265,8 @@ void vm_tdx_init_vm(struct kvm_vm *vm, uint64_t attributes)
> memcpy(&init_vm->cpuid, cpuid, kvm_cpuid2_size(cpuid->nent));
> free(cpuid);
>
> + tdx_check_attributes(vm, attributes);
> +
> init_vm->attributes = attributes;
>
> vm_tdx_vm_ioctl(vm, KVM_TDX_INIT_VM, 0, init_vm);