Re: [PATCH v12 14/23] KVM: selftests: Add helpers to init TDX memory and finalize VM

Hi Sagi,

On 10/28/25 2:20 PM, Sagi Shahar wrote:

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 2551b3eac8f8..53cfadeff8de 100644 --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c @@ -270,3 +270,61 @@ void vm_tdx_init_vm(struct kvm_vm *vm, uint64_t attributes) free(init_vm); }

+static void tdx_init_mem_region(struct kvm_vm *vm, void *source_pages,

• 		uint64_t gpa, uint64_t size)
  

+{

• uint32_t metadata = KVM_TDX_MEASURE_MEMORY_REGION;
• struct kvm_tdx_init_mem_region mem_region = {

• .source_addr = (uint64_t)source_pages,
  

• .gpa = gpa,
  

• .nr_pages = size / PAGE_SIZE,
  

• };
• struct kvm_vcpu *vcpu;
• vcpu = list_first_entry_or_null(&vm->vcpus, struct kvm_vcpu, list);
• TEST_ASSERT((mem_region.nr_pages > 0) &&

•     ((mem_region.nr_pages * PAGE_SIZE) == size),
  

•     "Cannot add partial pages to the guest memory.\n");
  

• TEST_ASSERT(((uint64_t)source_pages & (PAGE_SIZE - 1)) == 0,

•     "Source memory buffer is not page aligned\n");
  

IS_ALIGNED() helper may be used here?

Reinette