From nobody Wed Dec 17 12:17:03 2025 Received: from mail-io1-f73.google.com (mail-io1-f73.google.com [209.85.166.73]) (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 95A323587C6 for ; Tue, 28 Oct 2025 21:21:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761686474; cv=none; b=TVbaNk5VkDkC3ZB9A4Cd3g9S0C90s9O+XCaQHPuhB44qMaAyVbRcI2WViaPM5pHdvfUJheoV5J1gVDwzP4N5W3bVhq5ojP/SJxwr4fymt9w2ZsetXV/l0IczGjhx/GJ6qXrEtoWFr6AaeiLx5qWUVO3h6fCaGZDkDasM5ogCx8U= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761686474; c=relaxed/simple; bh=FNuIYYaTDnExBaJlJLyltrsAwMmyaJqObjpLAPe8cjE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=GDHgL+42zKhsMYweMCk6o/3q8nzsW2BaJjXzXkALTD6jCWxRTiohi9AU8O+EXsJPKNoM8o1aHzegILwTh2GEst4gEtwY7S7ikKLtUxQfMXdXgUaQZB8uiD9mxkQw7Aax8oNP9KWQ6MvH5N4XCaaUj8GeDs7YcQbspltZ+6yavjY= 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=pDez+d29; arc=none smtp.client-ip=209.85.166.73 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="pDez+d29" Received: by mail-io1-f73.google.com with SMTP id ca18e2360f4ac-940d395fd10so1991961739f.1 for ; Tue, 28 Oct 2025 14:21:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1761686472; x=1762291272; 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=wtNpCTnCzrMlYFhLw7qwZUR1YJujCF7DVHm7Qw4COQg=; b=pDez+d29ZUBLyQ2z+W4MxL17R9bxZzpkYFI+0uoSoAcHHhNmx3F6IL/QOVdQx+5jB6 kwoFy1qMOQCOa+aZ1wuuooglZq+dy8ayyD9BXBiKD+PWiJCLQHD3ZCoSwhrFT6lM4iPR c4gWuiil9aBtofSQfHw4Lx7+OSSHoIctke40GBKXgdYHXAIxD+8lBHr4vLCxCTx8rJDk EfmzVBuDWqS04QdwdIAaBosmAV6V0xO4CLGwyVt/rJ2RFLB6ITfjCjLK96VftOMLpaj0 a5YQcL8RChK4nlnxJJeaL1Qd4AT/29d7iU/4Dlwcmy1EK0rlCd1zI+tFq1MyQWU7RXCw gT2g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761686472; x=1762291272; 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=wtNpCTnCzrMlYFhLw7qwZUR1YJujCF7DVHm7Qw4COQg=; b=EQag28OJvaoxp/n19TGODYyigsDA88u/LKkth4YSDsLTGeG/wRRFPAFDAtwlWFbDKy Bydz1s7GrLCAcOOZ25rr0xaKtTtc7FN+CLZFBOixbAirRMXrdnr6tbAuv4pvecPoJD7d RgRfPSnRh8ak8O1CC+mGE6nb4M7Ih+4dGVjxcC/cDshCqK6nL2cT6wkVulmcWLapdouI iCz8TgAf44mPmAzkWSlabBj4fr5/6MMUE+Emtjg95oBDReV8exYBcqxksdPycrfjjbLh R0BWlo27W8sIcwRR+3Fpe9yniaWl1RKwsIRP1SB6KM7gNyRY0loEE4C9owLlbWDt+lh2 8YoA== X-Gm-Message-State: AOJu0YxZ6n8tLfR4hFmwjgjKsiGhBZBvxNS/jIO+Z45xV0Il/x027lpc QNZU++SOfXgCcVEl+vBz8i9n5CB0ULmKIMcSoXWCFeJBldV7py+oTgDpxwJ8JU0mwXWaVzq1FOy vbw== X-Google-Smtp-Source: AGHT+IE4wigd+sbcojUz5qHvrr7kF5OQrUZWBBxs3tohiwBFRj7c0ff5ucgIVmL3YMeSBqq9v4qFKvnm5A== X-Received: from iobhd10.prod.google.com ([2002:a05:6602:680a:b0:945:af6f:682e]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6602:2d83:b0:945:abea:9f6a with SMTP id ca18e2360f4ac-945c9889dc5mr154675739f.19.1761686471591; Tue, 28 Oct 2025 14:21:11 -0700 (PDT) Date: Tue, 28 Oct 2025 21:20:43 +0000 In-Reply-To: <20251028212052.200523-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251028212052.200523-1-sagis@google.com> X-Mailer: git-send-email 2.51.1.851.g4ebd6896fd-goog Message-ID: <20251028212052.200523-18-sagis@google.com> Subject: [PATCH v12 17/23] 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 990f2769c5d8..036875fe140f 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -722,6 +722,19 @@ 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; @@ -729,15 +742,21 @@ 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 2.51.1.851.g4ebd6896fd-goog