From nobody Sun Oct 5 07:21:18 2025 Received: from mail-pj1-f73.google.com (mail-pj1-f73.google.com [209.85.216.73]) (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 876642741C3 for ; Thu, 7 Aug 2025 20:16:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754597811; cv=none; b=HisWXjyjx0YZQHcEMbE8QaAhkYwZKL3aAUplGjevPjE5mdOZefT53sxDvyOg2JhjMTLVs4G3NORU1xH+Mg42eiPOfJGWC0kdEo0vBfbgM057xy5G+eHB7bumi2PcQZZLnU0ttH7WT724/gm78aO0o9jBSXNuCe2EfXy3O9KYpK0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754597811; c=relaxed/simple; bh=qZKtRz7nLG2KF7a1TIq9CkaKwIyQfE7M1cz+YMT0C3k=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=j/OtrrihLF/F0oxkrDakOpmPtZxWu2LV43ETKgcXJq2sskavYEpf5nGjW3Z+R97UCGWT/Xa/koUTShjSL6e4fiTrscvvsMkWeJm25LjVSgCWLeiN7TplG/cTicdEhtK0KLieeJ0AWyh6tnLO4XQxuKd2FGpzTJbv5bmpEfrx3Wc= 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=ZmFzrer6; arc=none smtp.client-ip=209.85.216.73 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="ZmFzrer6" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-31f65d519d3so2850373a91.2 for ; Thu, 07 Aug 2025 13:16:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1754597808; x=1755202608; 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=ok7xE/zvSsxm3sMvm91OXvNKe4HIqd8wijh5DP/BfeQ=; b=ZmFzrer6tnf89eTHTYtDDmcOlwC7JhRsg5azmqe4vedhD8IK8/8xH8c0LpvUyRz2FP Px+K7U0iwI+S6WRFc/QpANy4QUbrsEzv6B7O+0RW+Uq/B5LOH+BHY80oxhwWtlSmi8VU sZKvt8OHddPO7glc0yzKco2t3IyQAsC7/3ZemZ2uWFRc6PXIhXF7NbIKNX+T+7bBtqWL hQkLTWD51D5726zXEfrOPw4wdNlIUX69hH7MeZ9XzUo74n0sPoueRnlLeFtoisDGK/aC 105Z+YEmorV9kn+DuV1+CfrnjJqHc3NcnG7QPhkIDBQeytX6mYePVjUaF2YE26mTXqEQ vsJw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754597808; x=1755202608; 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=ok7xE/zvSsxm3sMvm91OXvNKe4HIqd8wijh5DP/BfeQ=; b=aIe3Vf0EvZY8FjMnc5GwmEPZ3pAMM2G4/4gedm0i2Yhd9stmDhRgOS3Iyvfa1encM4 OAlhy7ccZOQqWpfJpukh71dgmYbqgS7oFcijoEOarQjW+cb4wKs0+ocoo+X/oBusn8vH 0VienZR5/HHG1MvdSXy81/uLos/IPNf8zFo/NPHL6kcawtbO3moDa0FMYZ/Z7CZmFIgX ZLanhmoxtvxYBwU6eeJeJY15GzANXz2EpDRuovBXoA/lKGPtx1ddExf+ywxH5IjS+qot 3EM3T1lBvGK/xVJaFk4j4JL0RtsY4NId2Mm7aflDno+cY19cgD+BzOoWgvQKyhmsqpjR FD5w== X-Gm-Message-State: AOJu0Yy+wHOeJ5fopxg7RORb8qRtqIDDrcVaB8Wmblmi4kdvO8wJEtMG nz67gMmjhWPJMr7GOMoD0lSoy37tnOXRsePMcLbUVHtSFRr418CDZu6cL9DMjZZazRHz9+k1mYb mCg== X-Google-Smtp-Source: AGHT+IEOPFXTvjzpu+YcxLn8CBY9Lmh8oefZR6eapvpl0ypNZ8CQQQCwseoJbEg4jHcPbgbjKqwF/k3k4w== X-Received: from pjnx5.prod.google.com ([2002:a17:90a:8a85:b0:31f:335d:342d]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:4d89:b0:321:2160:bf76 with SMTP id 98e67ed59e1d1-32183e6d8b9mr392794a91.25.1754597808002; Thu, 07 Aug 2025 13:16:48 -0700 (PDT) Date: Thu, 7 Aug 2025 13:16:03 -0700 In-Reply-To: <20250807201628.1185915-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250807201628.1185915-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.rc0.155.g4a0f42376b-goog Message-ID: <20250807201628.1185915-8-sagis@google.com> Subject: [PATCH v8 07/30] KVM: selftests: TDX: Use KVM_TDX_CAPABILITIES to validate TDs' attribute configuration 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 Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Ackerley Tng This also exercises the KVM_TDX_CAPABILITIES ioctl. Suggested-by: Isaku Yamahata Co-developed-by: Isaku Yamahata Signed-off-by: Isaku Yamahata Signed-off-by: Ackerley Tng Signed-off-by: Sagi Shahar --- .../selftests/kvm/lib/x86/tdx/tdx_util.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c b/tools/tes= ting/selftests/kvm/lib/x86/tdx/tdx_util.c index 392d6272d17e..bb074af4a476 100644 --- a/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c +++ b/tools/testing/selftests/kvm/lib/x86/tdx/tdx_util.c @@ -140,6 +140,21 @@ static void tdx_apply_cpuid_restrictions(struct kvm_cp= uid2 *cpuid_data) } } =20 +static void tdx_check_attributes(struct kvm_vm *vm, uint64_t attributes) +{ + struct kvm_tdx_capabilities *tdx_cap; + + tdx_cap =3D tdx_read_capabilities(vm); + + /* TDX spec: any bits 0 in supported_attrs must be 0 in attributes */ + TEST_ASSERT_EQ(attributes & ~tdx_cap->supported_attrs, 0); + + /* TDX spec: any bits 1 in attributes must be 1 in supported_attrs */ + TEST_ASSERT_EQ(attributes & tdx_cap->supported_attrs, attributes); + + free(tdx_cap); +} + #define KVM_MAX_CPUID_ENTRIES 256 =20 #define CPUID_EXT_VMX BIT(5) @@ -256,6 +271,8 @@ static void tdx_td_init(struct kvm_vm *vm, uint64_t att= ributes) memcpy(&init_vm->cpuid, cpuid, kvm_cpuid2_size(cpuid->nent)); free(cpuid); =20 + tdx_check_attributes(vm, attributes); + init_vm->attributes =3D attributes; =20 tdx_apply_cpuid_restrictions(&init_vm->cpuid); --=20 2.51.0.rc0.155.g4a0f42376b-goog