From: Ackerley Tng ackerleytng@google.com
This also exercises the KVM_TDX_CAPABILITIES ioctl.
Suggested-by: Isaku Yamahata isaku.yamahata@intel.com Co-developed-by: Isaku Yamahata isaku.yamahata@intel.com Signed-off-by: Isaku Yamahata isaku.yamahata@intel.com Signed-off-by: Ackerley Tng ackerleytng@google.com Signed-off-by: Sagi Shahar sagis@google.com --- .../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 392d6272d17e..bb074af4a476 100644 --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c @@ -140,6 +140,21 @@ static void tdx_apply_cpuid_restrictions(struct kvm_cpuid2 *cpuid_data) } }
+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); +} + #define KVM_MAX_CPUID_ENTRIES 256
#define CPUID_EXT_VMX BIT(5) @@ -256,6 +271,8 @@ static void tdx_td_init(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;
tdx_apply_cpuid_restrictions(&init_vm->cpuid);