From nobody Sun Sep 14 14:53:51 2025 Received: from mail-pl1-f202.google.com (mail-pl1-f202.google.com [209.85.214.202]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 68A3029BDB4 for ; Thu, 4 Sep 2025 06:55:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968930; cv=none; b=RGVlO472G6amQ1htYXHt7UQ+qvTtl2Kp3Aq2A1LBBHS3drr5Le9vnSjCt7IpNcZweDTaZE4EuzZrN/n9q7h8SL8o5E82T+FCWNFYnFBFSdeEZmtLK0wsiBwRxFf69pbtHrbp8/+JZsNUST3A4r0uWtxWr1LThfTIDpTAZTT7NgU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968930; c=relaxed/simple; bh=A3rvNv5tLE6sXzjWetLlKSM8k2q2gEXk49EouZJdocs=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=mwonVaY3DDBdh0TY7JOrr+CF9iotpRLrHINK5jEAgcT3NqFOtC311S8l1z8ATCZkJ+YbFFVOqR/0tg84cjz/OHrAcO+hZXLyqUqXIYKHXiWRlQiVhmVHNOPqVYk6MChGiz4CMNuXtdciJbtf7P29w1DcYG1fnMahIEzyXbQJPpU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sagis.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=v/UKW17+; arc=none smtp.client-ip=209.85.214.202 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--sagis.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="v/UKW17+" Received: by mail-pl1-f202.google.com with SMTP id d9443c01a7336-248eec89618so9990465ad.1 for ; Wed, 03 Sep 2025 23:55:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756968928; x=1757573728; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=7jyzFRHHiSGpkjG2s+KNnXbL/OeDAvT2CWWv4I+ohEc=; b=v/UKW17+yXm+POY8T+V38W1I0sjblkHsI+MFHch4DhumNF4VSPrywAguzrCRGPlglh LgnfG1OYHk9WSDsZ9Uh2dZJQv7PHZJbA8o9C7N9yojS7z+LMfpVdeZNw58ZUbZ8u4ku/ syNYliZQe1ov94Q+sZSLYwHqB1/5ZdnjPqEL0tfxCrCI1CAgPbIiGrP01WCqxA6DJCzy a+7re2latKmqMNmLfJujocCq5fdHUnDXJ1L4KEO32OY2vXA/vg5uWL5NEy02tAUSmXwh n4hDYILU9OhZAFWbFyZGDZJXIBNcyQdZDIdEXzETD+GQa0/JQd6WFV/9WB9iGlHhX8KL Z30A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756968928; x=1757573728; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=7jyzFRHHiSGpkjG2s+KNnXbL/OeDAvT2CWWv4I+ohEc=; b=fZlyMkKYLf0M27HAIm+gpwaTxNMS00NoODK5PencVY4jflJtgEJH45aQ9PY4CuH970 xsa9RjEkmmacWMY6pg2GGOq6EO9O3hBphJMbjkOmwdUMNJDXM+UqZDQwQTn5usGniVPb ggwqqXyJi+Q9ge1zzjpL95QxPvpB62T3juLSluRHjs3vFbUr/EYRDM9aqSLD6nH9HyId OonWQwue0Ws33PCtz/rhYqBhoBYcTuaWBvBAhEeRKEEp34hq/cWNtuwnQSUB/AmoLBow DStOONwnLHEEz+EVW4CIbRw0DbZnSNufWx5r0rM6TrnRqbTBK5SZhflDtdxWmjmbRNF7 kUrg== X-Gm-Message-State: AOJu0YzJGfbk6GlJme6GfthJOjPBHQdyxWo23QfBkmhk0LtzMMeyls53 iNfW233uO0CIzdy6WM2Pusg11qjHEMghTXzTl952wZqJBFg7RqBeHGebWDEERl4pSbmzciFHO3Y BXg== X-Google-Smtp-Source: AGHT+IFvmfVW+KjlSTZrEQuN275lpqi6Zns8OFz+/5+P3JxjVk+2+fXszGsfdn7feAXTaG2YLUI81w0/kA== X-Received: from plao20.prod.google.com ([2002:a17:903:3014:b0:248:df48:c4e]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ce03:b0:248:cd0b:3454 with SMTP id d9443c01a7336-24944873445mr201783715ad.9.1756968927646; Wed, 03 Sep 2025 23:55:27 -0700 (PDT) Date: Wed, 3 Sep 2025 23:54:46 -0700 In-Reply-To: <20250904065453.639610-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250904065453.639610-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Message-ID: <20250904065453.639610-17-sagis@google.com> Subject: [PATCH v10 16/21] KVM: selftests: Call KVM_TDX_INIT_VCPU when creating a new TDX vcpu From: Sagi Shahar To: linux-kselftest@vger.kernel.org, Paolo Bonzini , Shuah Khan , Sean Christopherson , Ackerley Tng , Ryan Afranji , Andrew Jones , Isaku Yamahata , Erdem Aktas , Rick Edgecombe , Sagi Shahar , Roger Wang , Binbin Wu , Oliver Upton , "Pratik R. Sampat" , Reinette Chatre , Ira Weiny , Chao Gao , Chenyi Qiang Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" TDX VMs need to issue the KVM_TDX_INIT_VCPU ioctl for each vcpu after vcpu creation. Since the cpuids for TD are managed by the TDX module, read the values virtualized for the TD using KVM_TDX_GET_CPUID and set them in kvm using KVM_SET_CPUID2 so that kvm has an accurate view of the VM cpuid values. Signed-off-by: Sagi Shahar --- .../testing/selftests/kvm/lib/x86/processor.c | 35 ++++++++++++++----- 1 file changed, 27 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testin= g/selftests/kvm/lib/x86/processor.c index c255fe1951be..b1e5f4137629 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -685,6 +685,19 @@ vm_vaddr_t kvm_allocate_vcpu_stack(struct kvm_vm *vm) return stack_vaddr; } =20 +static void vm_tdx_vcpu_add(struct kvm_vm *vm, struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid2 *cpuid; + + cpuid =3D allocate_kvm_cpuid2(MAX_NR_CPUID_ENTRIES); + vm_tdx_vcpu_ioctl(vcpu, KVM_TDX_GET_CPUID, 0, cpuid); + vcpu_init_cpuid(vcpu, cpuid); + free(cpuid); + vm_tdx_vcpu_ioctl(vcpu, KVM_TDX_INIT_VCPU, 0, NULL); + + vm_tdx_load_vcpu_boot_parameters(vm, vcpu); +} + struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id) { struct kvm_mp_state mp_state; @@ -692,15 +705,21 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, = uint32_t vcpu_id) struct kvm_vcpu *vcpu; =20 vcpu =3D __vm_vcpu_add(vm, vcpu_id); - vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid()); - vcpu_init_sregs(vm, vcpu); - vcpu_init_xcrs(vm, vcpu); =20 - /* Setup guest general purpose registers */ - vcpu_regs_get(vcpu, ®s); - regs.rflags =3D regs.rflags | 0x2; - regs.rsp =3D kvm_allocate_vcpu_stack(vm); - vcpu_regs_set(vcpu, ®s); + if (is_tdx_vm(vm)) { + vm_tdx_vcpu_add(vm, vcpu); + } else { + vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid()); + + vcpu_init_sregs(vm, vcpu); + vcpu_init_xcrs(vm, vcpu); + + /* Setup guest general purpose registers */ + vcpu_regs_get(vcpu, ®s); + regs.rflags =3D regs.rflags | 0x2; + regs.rsp =3D kvm_allocate_vcpu_stack(vm); + vcpu_regs_set(vcpu, ®s); + } =20 /* Setup the MP state */ mp_state.mp_state =3D 0; --=20 2.51.0.338.gd7d06c2dae-goog