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Sampat" , Reinette Chatre , Rick Edgecombe , Roger Wang , Ryan Afranji , Sagi Shahar , Sean Christopherson , Shuah Khan , Xiaoyao Li , Oliver Upton Cc: Jeremiah McReynolds , kvm@vger.kernel.org, linux-coco@lists.linux.dev, linux-kernel@vger.kernel.org, x86@kernel.org, Lisa Wang Content-Type: text/plain; charset="utf-8" From: Sagi Shahar Allocate a guest stack for each vCPU and record the GVA in the TDX boot parameters region to allow proper vCPU initialization. Co-developed-by: Ackerley Tng Signed-off-by: Ackerley Tng Signed-off-by: Sagi Shahar Signed-off-by: Lisa Wang Reviewed-by: Binbin Wu --- tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h | 1 + tools/testing/selftests/kvm/lib/x86/processor.c | 2 ++ tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c | 10 ++++++++++ 3 files changed, 13 insertions(+) diff --git a/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h b/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h index 07e7f5c90329..93ce6e1ad2c8 100644 --- a/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h +++ b/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h @@ -69,5 +69,6 @@ void tdx_init_vm(struct kvm_vm *vm, u64 attributes); void tdx_vm_setup_boot_code_region(struct kvm_vm *vm); void tdx_vm_setup_boot_parameters_region(struct kvm_vm *vm, u32 nr_runnable_vcpus); void tdx_vm_load_common_boot_parameters(struct kvm_vm *vm); +void tdx_vcpu_load_boot_parameters(struct kvm_vm *vm, struct kvm_vcpu *vcpu); #endif /* SELFTESTS_TDX_TDX_UTIL_H */ diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testing/selftests/kvm/lib/x86/processor.c index f6a2aa6b86a4..5e415c6577b8 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -847,6 +847,8 @@ static void tdx_vcpu_init(struct kvm_vm *vm, struct kvm_vcpu *vcpu) vcpu_init_cpuid(vcpu, cpuid); free(cpuid); tdx_vcpu_ioctl(vcpu, KVM_TDX_INIT_VCPU, 0, NULL); + + tdx_vcpu_load_boot_parameters(vm, vcpu); } struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, u32 vcpu_id) 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 5bbe51ad0f66..3c3ac6c7ce40 100644 --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c @@ -104,6 +104,16 @@ void tdx_vm_load_common_boot_parameters(struct kvm_vm *vm) TEST_ASSERT(params->idtr.base != 0, "idt base address should not be 0"); } +void tdx_vcpu_load_boot_parameters(struct kvm_vm *vm, struct kvm_vcpu *vcpu) +{ + struct td_boot_parameters *params = + addr_gpa2hva(vm, TD_BOOT_PARAMETERS_GPA); + struct td_per_vcpu_parameters *vcpu_params = + ¶ms->per_vcpu[vcpu->id]; + + vcpu_params->esp_gva = kvm_allocate_vcpu_stack(vm); +} + static struct kvm_tdx_capabilities *tdx_read_capabilities(struct kvm_vm *vm) { static struct kvm_tdx_capabilities *tdx_cap; -- 2.55.0.229.g6434b31f56-goog