From nobody Thu Oct 2 01:01:46 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 79E7C31E0FB for ; Thu, 25 Sep 2025 17:29:24 +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=1758821367; cv=none; b=tmuWfQAnK2TAO4G49DiWVYFb5rmJv1qLskMP34F0V7a3qQ2ofvyQGQh1oXHCAkhniCKVwC764Wotjnr/3S1t0ZQ++9c/k8j2tAKfIfYqd1vKCypr8hS11moG7di2Gly1AP5PFyFuYFVXiDbT/u2jOXRWTrzeeMZvaEfpHel8WRc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758821367; c=relaxed/simple; bh=N5r2pH7Jwn+UxzmPgmfntcD0GoTvHLPDa8gfUCDrUac=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=PmbPuNUEo5t2sdhWiXapfmSzOWrJniXU6FuTDGth0ZGt97LkHsKYNdeOs3gaYbw5Z6cPT3ZWcDWksb+4UKno+vayyGaimlilpsFBT1NvZLoinz472ll0l7+mxLUvG6JEywW0CsFwo5IUVwIeRmpwZhGVcMa3M3beMUd+9nRR5nA= 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=kiPEiI36; 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="kiPEiI36" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-32eb864fe90so1671864a91.3 for ; Thu, 25 Sep 2025 10:29:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1758821364; x=1759426164; 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=TyCKgWtQwcGiOpMFoEKR3neFUGnY7KbKUl9IgIuxfzM=; b=kiPEiI36knB8QTJ3KHIYCWiPvvsocQ5DEHDaXsm/x1eDDfhaOGfeoGdpa1kUx8uVso qgQj6Lo/q7NG4Ozh4G3ArfTAZiwByd87LlUzsb0P3ZOPXCxyyi6O0sZd70S/AaVjr4pg wNIOSERXGWbRpbZaaO1LSAv1aSFK4rIck/ErEXO1Lm1iTuryL8+N7JKVQVJXHqPRtMyG Kq+HOxeC6HXQ0nM41yy6UqlUVE4lPa/oeZVxQ4udJ6QsRNm+RU32VmA+CoNdWyXX3WrQ mjF4ueVfSY8xqKTdiZgipl/e3x/LIiR2g61iDBHFc2QF7oLyI3mfnOJMr0SHlWl3Xbu9 +b1w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758821364; x=1759426164; 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=TyCKgWtQwcGiOpMFoEKR3neFUGnY7KbKUl9IgIuxfzM=; b=vYDnXQmrmFdWZFTgOfCwgm6LXoaM3+ZgAtODupQCSeV70sUjnliVhQPJtDQ/26M0dB NLvotDYBMBEAz07br/xHUD+IhL+IZ5AEUp6dgRhlTlufGo5niuaEA2Bt3C/qCwIlffm7 jX8G5ypP5jtEJmoLyxLf/+qQDJrTvq4bGKaZZ11l9HFrvN9C5Vgio8YZjb/ePac8oRuY kjNYewsZwhoM3nn2mHKQHFKqMcBEAo+JWSM6lqNUo7Myk4pw2ijwuC3Ojb2cT5TYUsak 8BU5ww61770X2n8v+hwSX6AnzDjI5nF/nHYT8/VL2zwUu58BXnDrhpfjpFQZVgmDz5Wp lLSQ== X-Gm-Message-State: AOJu0YxSTMK/8E81mXDa2ZdJpVyyt9DzvkX0jQSxfSHp5DORJ39nGRDF gIlcfUyJMlaTDFCvpS+oG0wKQ3GGhcUbNCz9r4Ch+OOjTZaJkteMtFHPJ1oUUPSuur71dQXwLVa KWw== X-Google-Smtp-Source: AGHT+IGtkbqPWYz7tRWeWPbzX217uH2zZdaR1bIpo6u/9uGJ75IYJo3XP4QrWpILMFrCsKY1/OpEkVcpXw== X-Received: from pjbon17.prod.google.com ([2002:a17:90b:1d11:b0:32e:e06a:4668]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:1e05:b0:330:6d2f:1b53 with SMTP id 98e67ed59e1d1-3342a2e3f06mr4714551a91.35.1758821363780; Thu, 25 Sep 2025 10:29:23 -0700 (PDT) Date: Thu, 25 Sep 2025 10:28:43 -0700 In-Reply-To: <20250925172851.606193-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250925172851.606193-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.536.g15c5d4f767-goog Message-ID: <20250925172851.606193-16-sagis@google.com> Subject: [PATCH v11 15/21] KVM: selftests: Setup memory regions for TDX on vm creation 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" Guest registers are inaccessible to kvm for TDX VMs. In order to set register values for TDX we use a special boot code which loads the register values from memory and write them into the appropriate registers. This patch sets up the memory regions used for the boot code and the boot parameters for TDX. Signed-off-by: Sagi Shahar --- tools/testing/selftests/kvm/lib/kvm_util.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/sel= ftests/kvm/lib/kvm_util.c index b4c8702ba4bd..d8a944b5ada3 100644 --- a/tools/testing/selftests/kvm/lib/kvm_util.c +++ b/tools/testing/selftests/kvm/lib/kvm_util.c @@ -4,6 +4,7 @@ * * Copyright (C) 2018, Google LLC. */ +#include "tdx/tdx_util.h" #include "test_util.h" #include "kvm_util.h" #include "processor.h" @@ -465,7 +466,7 @@ void kvm_set_files_rlimit(uint32_t nr_vcpus) static bool is_guest_memfd_required(struct vm_shape shape) { #ifdef __x86_64__ - return shape.type =3D=3D KVM_X86_SNP_VM; + return (shape.type =3D=3D KVM_X86_SNP_VM || shape.type =3D=3D KVM_X86_TDX= _VM); #else return false; #endif @@ -499,6 +500,12 @@ struct kvm_vm *__vm_create(struct vm_shape shape, uint= 32_t nr_runnable_vcpus, for (i =3D 0; i < NR_MEM_REGIONS; i++) vm->memslots[i] =3D 0; =20 + if (is_tdx_vm(vm)) { + /* Setup additional mem regions for TDX. */ + vm_tdx_setup_boot_code_region(vm); + vm_tdx_setup_boot_parameters_region(vm, nr_runnable_vcpus); + } + kvm_vm_elf_load(vm, program_invocation_name); =20 /* --=20 2.51.0.536.g15c5d4f767-goog