From nobody Wed Dec 17 12:17:20 2025 Received: from mail-io1-f74.google.com (mail-io1-f74.google.com [209.85.166.74]) (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 62EB1354ADD for ; Tue, 28 Oct 2025 21:21:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761686463; cv=none; b=Ukh/CUGuYLS2vt+abVd7UGEJ6N19LuNM/Uac+kCyAZSIpuOTpjpKoxPU+L7K7WRmWV6erPrdGBE8WnafXpXGldAApfO7iMuvL8duKy6QweUf6Q5mq2yCQ6B1a8h8dw1LfwmJkLYYvxAqrk6tg6Ivh+tULmWIdv6Zn2UJA3I6p74= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761686463; c=relaxed/simple; bh=EJICXa/yniV4LFyjrDgYiN24uZol6pdpsvo9d5t1gtc=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=o1/n8GNJTFNeJbFS61kwLrx0HMlEokJzpWwx6ygAhcrB/cmZ3dvmrF8bATLmWVwPAK07qJ5sLBs3QUP92yoGxyOqa9W1YRNlwSYHbvL0M4v+zc8KH+EFJiLhl3ziujWu89tZiSp0vcmqnylKHq7fOS6xr/t+TEFFD3nT71nrpss= 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=BT0Vg4bY; arc=none smtp.client-ip=209.85.166.74 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="BT0Vg4bY" Received: by mail-io1-f74.google.com with SMTP id ca18e2360f4ac-93e4da7a183so609538239f.1 for ; Tue, 28 Oct 2025 14:21:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1761686460; x=1762291260; 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=KJrNVIag5TCnvbKa/N0Y0euKb8NaHrULGif/OSObmig=; b=BT0Vg4bYZGBWSXHbuFwcZrV5ooC2CsTLeLzwo4/ZIVK2xd5bfLJGgGYuVaX3YFb4FW ULVOH3AgT0Gor0JOZm1BUhnEBxWofes7wVJ59DbEsN781F5hxiqFiWvTz01oDVwF7WTv B87lgLT0sLJ2WgMJtcslKrpZkVl5cQkcY8SfvmK4aihsaL9OoCYbyfSRjn/xmqsAE1JU gp7ysGgVuAyiueUQ9gWOLhP4x0eE4QWoBIEjAqh5BdoaMiMMPujUIJ7MTBtAT0aOAqub /ruuRMzbZTeUJ99EHqmpgGWEtDZRXArXkICAl+ekEo7Uo42oKHAp4ZCN/IVWFc9oxtGO LCaQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1761686460; x=1762291260; 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=KJrNVIag5TCnvbKa/N0Y0euKb8NaHrULGif/OSObmig=; b=Lb0MVmpOqr0JzpIfJS+CdN+6I5eTC8puaBFy+k0piSW/gU80fYPq8FFDrwQFka8Eqe vL0eNsExn9cNcVk2fBMb76Ke8BgdcUu0HkBp9W8JRyHO6BSPdK6QfeY3eFT3UF4n/yaU iMKbqYB8qRLvYTm40zUbISF2tgF0UYIN1266VXblaGE0CP5QDVDlg639wYfQx3xnmC6v 5unHX/4B6pFbAI5P/V/j44zCTEcE7ScomL+DkEfpyolrhnO5VEz1X96Iyqxmbqo1ILSX F2BGSUU463XKsJbwO7wdjRCeqDvNK7PHK4Ta5yW8AG7ZK1Rz/boVV88ZFsOfXwBRUgww yrpQ== X-Gm-Message-State: AOJu0YyOjaMXOPlOcfrlHaBLgUJvV9TfoxETRz64KbH+7cgHT3VqPXR6 hDpnXQ77RyDsANRIHowMNgvQHAonPpq4KyS7sN2TAFBA9VDEIf7+NIy06UJjXJhMHR92HG/0EK6 JmQ== X-Google-Smtp-Source: AGHT+IEFDrPZWGFBr5+mejr0DLlrxzW412Y0+IuWkkXjbawypFaXM37gBgvb80RrvB50OENuGh7DZHijvw== X-Received: from iobid12.prod.google.com ([2002:a05:6602:6a8c:b0:944:5708:3425]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6602:3fcd:b0:945:a7ce:646c with SMTP id ca18e2360f4ac-945c97ea328mr148145439f.10.1761686460371; Tue, 28 Oct 2025 14:21:00 -0700 (PDT) Date: Tue, 28 Oct 2025 21:20:31 +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: <20251028212052.200523-6-sagis@google.com> Subject: [PATCH v12 05/23] 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. Reviewed-by: Binbin Wu 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 Reviewed-by: Ira Weiny --- .../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 2898fe4f6de4..519d60a3827c 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -9,6 +9,7 @@ #include "pmu.h" #include "processor.h" #include "sev.h" +#include "tdx/tdx_util.h" =20 #ifndef NUM_INTERRUPTS #define NUM_INTERRUPTS 256 @@ -1195,12 +1196,19 @@ 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 BIT_ULL(gpa_bits - 1); + vm->gpa_tag_mask =3D vm->arch.s_bit; } } =20 --=20 2.51.1.851.g4ebd6896fd-goog