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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 Reviewed-by: Xiaoyao Li --- 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 | 12 ++++++++++++ 3 files changed, 15 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 f5b2f32f2118..72497724a2ee 100644 --- a/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h +++ b/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h @@ -70,5 +70,6 @@ void tdx_init_vm(struct kvm_vm *vm); 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 4af9cbf3fabb..2d2160d68b9b 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -888,6 +888,8 @@ 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 40ee9b1951c2..270a4ee1b7eb 100644 --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c @@ -90,6 +90,18 @@ void tdx_vm_load_common_boot_parameters(struct kvm_vm *vm) "gdt must be within 32-bit address space for 32-bit boot code"); } +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); + TEST_ASSERT(vcpu_params->esp_gva < (1ULL << 32), + "ESP GVA must be within 32-bit address space for 32-bit boot code"); +} + static const struct kvm_tdx_capabilities *tdx_read_capabilities(struct kvm_vm *vm) { static struct kvm_tdx_capabilities *tdx_cap; -- 2.56.0.rc1.315.gc6ed9934b7-goog