From nobody Sat Oct 4 03:00:39 2025 Received: from mail-pg1-f201.google.com (mail-pg1-f201.google.com [209.85.215.201]) (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 54C892E8B77 for ; Thu, 21 Aug 2025 04:29:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755750573; cv=none; b=I7I0tFp1wDxVc3QUhgW9vJK4fCi0ZwdbQQgEgyE6oBiXhM8u35fRGj9Vcz7CLEcMR0MfhtnP9/yB5eqFfM8piYqAIb6fb/oiN400R3lhunmkOD1XCQix4j/KsV7xIrz0EUbw1ZGVeeNS62wOE9HBeex7eOya60AocRKLFKnQcVE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755750573; c=relaxed/simple; bh=tr/kYasvhaM7kVMspgyv9tdsJx7ARbBqJCQJSG2OYi0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=P1zgSxcOxBB5uhW5PCWhIzhOJ2zzJZY9AQPrZPSM/3Ai0d5v9mVcdMuiGN4SF9yzrd69e3CBXox6mo5QFiMMbx6PAAxnIh5BJta4axcYip/lTEgOXl681IiqUOWPa30t7mXj8LNuAnN/2kFXdL+OcAnJg+8BfWEbyu0WAPhkVSc= 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=Ostrz5e6; arc=none smtp.client-ip=209.85.215.201 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="Ostrz5e6" Received: by mail-pg1-f201.google.com with SMTP id 41be03b00d2f7-b47253319b8so383122a12.3 for ; Wed, 20 Aug 2025 21:29:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1755750571; x=1756355371; 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=0NNhncePcfevR9BqJj7luu3cgXc4QyqZzLOry8PLvlQ=; b=Ostrz5e69/1I4BGr7xqfykKD8DXxoNG4gstXZp9p0ewTu/PZRZhtav5GrBUSLDlzy6 f06I5SvLSvU3WrkWskdL6bGqBwikz7TeSRIgvmB+FfJaWRagK+HsK/3UkdAfeHuH0nVp XNuqnO+sLK4wS7NL7z2P+zoODGHb/iICOu0XzbyeFkR6fWRXeOC9PhnZDZR669CNNN2v DVrvMR3DDbE7VPSxzsF+YmbxCpdOo/PFpN7PTomyHNyBQLKaYvcagFifVTGiTZzq15uo gwMnreUyuuXlUFvU3wNkwGeo7mdmDxkMToEmr5ABdO1TqIFT3HTTGS2qhv28LZAp4pJj t62Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755750571; x=1756355371; 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=0NNhncePcfevR9BqJj7luu3cgXc4QyqZzLOry8PLvlQ=; b=WkQ2hDacghCciVJxxsWueD5bcnJwuaofEOVm/T14tDtMDq4Z+rj8baYmjhKImM/wyU ZRLFiu3dFTbUW0uw1w4sAUuPEpurWsFDsQrJbbiCeLMdfLt2g/9MuyswE0sjRseFPzyS dQM8oCwjCjZo3CPB4ILyy5mfne0J56VhProNSp3cSvY3ZwDxwUqjjlchknQgpLKwEszV QEQYryls3VgECOiJDjFHKwFWx2+pBwj63J33BgkdCkdxOdn1cPXvfk5qXxNVveeNi/1N 1HUslaulkcyvanIqhSWMDB539jfD1kmZsS/+SrfEZOtPphbfh/3Y6pW72n0vImonF2to 9Ocw== X-Gm-Message-State: AOJu0Ywc4nP70ZOTUIO2WOmVX2QTXxdEpsUqabvtIpPwsyPmjf891L6C RnNQG/+0LjTpkBZdmxoQ+uVIVyicL0Q3Cd11zS1CgRPf7XYONQEvlbBQ84bggI28l7kspCNEZCr N2A== X-Google-Smtp-Source: AGHT+IFHt8bMa7jB5MANhdG47UreNFuDH8fmYAoZds65ocGLlqKumuv8qls/N0mgvNCEDLrPY4SlSjc9EQ== X-Received: from pjyp4.prod.google.com ([2002:a17:90a:e704:b0:321:6924:af9a]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:f68b:b0:240:2145:e51f with SMTP id d9443c01a7336-245febe11dcmr17946895ad.3.1755750571576; Wed, 20 Aug 2025 21:29:31 -0700 (PDT) Date: Wed, 20 Aug 2025 21:28:58 -0700 In-Reply-To: <20250821042915.3712925-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250821042915.3712925-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.rc1.193.gad69d77794-goog Message-ID: <20250821042915.3712925-6-sagis@google.com> Subject: [PATCH v9 05/19] KVM: selftests: Update kvm_init_vm_address_properties() for TDX 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, Adrian Hunter Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Isaku Yamahata Let kvm_init_vm_address_properties() initialize vm->arch.{s_bit, tag_mask} similar to SEV. TDX sets the shared bit based on the guest physical address width and currently supports 48 and 52 widths. Co-developed-by: Adrian Hunter Signed-off-by: Adrian Hunter Signed-off-by: Isaku Yamahata Co-developed-by: Sagi Shahar Signed-off-by: Sagi Shahar --- .../selftests/kvm/include/x86/tdx/tdx_util.h | 14 ++++++++++++++ tools/testing/selftests/kvm/lib/x86/processor.c | 12 ++++++++++-- 2 files changed, 24 insertions(+), 2 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h diff --git a/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h b/tools= /testing/selftests/kvm/include/x86/tdx/tdx_util.h new file mode 100644 index 000000000000..286d5e3c24b1 --- /dev/null +++ b/tools/testing/selftests/kvm/include/x86/tdx/tdx_util.h @@ -0,0 +1,14 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +#ifndef SELFTESTS_TDX_TDX_UTIL_H +#define SELFTESTS_TDX_TDX_UTIL_H + +#include + +#include "kvm_util.h" + +static inline bool is_tdx_vm(struct kvm_vm *vm) +{ + return vm->type =3D=3D KVM_X86_TDX_VM; +} + +#endif // SELFTESTS_TDX_TDX_UTIL_H diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testin= g/selftests/kvm/lib/x86/processor.c index 1eae92957456..6dbf40cbbc2a 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -8,6 +8,7 @@ #include "kvm_util.h" #include "processor.h" #include "sev.h" +#include "tdx/tdx_util.h" =20 #ifndef NUM_INTERRUPTS #define NUM_INTERRUPTS 256 @@ -1190,12 +1191,19 @@ void kvm_get_cpu_address_width(unsigned int *pa_bit= s, unsigned int *va_bits) =20 void kvm_init_vm_address_properties(struct kvm_vm *vm) { + uint32_t gpa_bits =3D kvm_cpu_property(X86_PROPERTY_GUEST_MAX_PHY_ADDR); + + vm->arch.sev_fd =3D -1; + if (is_sev_vm(vm)) { vm->arch.sev_fd =3D open_sev_dev_path_or_exit(); vm->arch.c_bit =3D BIT_ULL(this_cpu_property(X86_PROPERTY_SEV_C_BIT)); vm->gpa_tag_mask =3D vm->arch.c_bit; - } else { - vm->arch.sev_fd =3D -1; + } else if (is_tdx_vm(vm)) { + TEST_ASSERT(gpa_bits =3D=3D 48 || gpa_bits =3D=3D 52, + "TDX: bad X86_PROPERTY_GUEST_MAX_PHY_ADDR value: %u", gpa_bits); + vm->arch.s_bit =3D 1ULL << (gpa_bits - 1); + vm->gpa_tag_mask =3D vm->arch.s_bit; } } =20 --=20 2.51.0.rc1.193.gad69d77794-goog