On 8/8/2025 4:16 AM, Sagi Shahar wrote:
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);
Do we need to set the init_vm->xfam based on cpuid.0xd and validate it with tdx_cap->supported_xfam?