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Sampat" , Reinette Chatre , Ira Weiny , Chao Gao , Chenyi Qiang Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Content-Type: text/plain; charset="UTF-8" From: Isaku Yamahata This also exercises the KVM_TDX_CAPABILITIES ioctl. Signed-off-by: Isaku Yamahata Co-developed-by: Sagi Shahar Signed-off-by: Sagi Shahar --- .../selftests/kvm/lib/x86/tdx/tdx_util.c | 17 +++++++++++++++++ 1 file changed, 17 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 3869756a5641..d8eab99d9333 100644 --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c @@ -232,6 +232,21 @@ 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); + + /* TDX spec: any bits 0 in supported_attrs must be 0 in attributes */ + TEST_ASSERT_EQ(attributes & ~tdx_cap->supported_attrs, 0); + + /* TDX spec: any bits 1 in attributes must be 1 in supported_attrs */ + 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; @@ -251,6 +266,8 @@ 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); -- 2.51.0.rc1.193.gad69d77794-goog