From nobody Sun Sep 14 14:53:51 2025 Received: from mail-pg1-f202.google.com (mail-pg1-f202.google.com [209.85.215.202]) (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 BC71F29B8D3 for ; Thu, 4 Sep 2025 06:55:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.202 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968928; cv=none; b=WhBVnt03Os1c3cHGSbi8kBJaPayMBsxv2SmPPo4GodAfn5aE6cqtOIpDzn/nA/oDEw9XeCbDyCnblXXds3C5LUicB6V/gtWT77po6ypwULcn8UzR+adyIla14DvnOYCv24QLkwDiw+hhGnc7h32n/JFdvyUhpDDlkcOMFSqjCkk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756968928; c=relaxed/simple; bh=jzB6ZNggPgXQrt5oRvtMpK/C1hmf8zACld+Ecgq9TtU=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=YiEEPvVhbHP15dIKS1Ctl30C7EFQuTT1P5ZVV6gds6m9W7DHSibFYVg6eHWjFWTbQeRtJ7MBNQmkp6C3iwGqH17kjhxwnXu1INXfDL3Q0Mk7/q7xDQ0HEOjvFGADOCMD9CYO1F6zZCOJHRVpWg4Syjur/nmE5hUCBXi/Zfu21yc= 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=mVd5SMVD; arc=none smtp.client-ip=209.85.215.202 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="mVd5SMVD" Received: by mail-pg1-f202.google.com with SMTP id 41be03b00d2f7-b47174bdce2so488144a12.2 for ; Wed, 03 Sep 2025 23:55:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1756968926; x=1757573726; 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=JxE+Xj3ugJHUcqN9a7F7aAsq//VgXJ8T/JzaLukZcD8=; b=mVd5SMVDUybeFqyXNebGqCtiwpQjoRXMwjGx23FkKwg7GsJDWSGqlWDlMulTn1tDgx 16F3Zyu1hhlUdOnzAjAnFX4ORerOUUOIi+0KspYHnuIWLZeREm6WkQ1WzPuW4c567s0L UzS5kObvn5/AcuuNL3sP1xmb8+RoVMSEkIgpGuJLHm5GLcktmjsCAgWJsN4bNHwQN0Dx zkorZMp87kdzvkfsVTI2qbYbQ3MtDME3i2russAzuO0ylVG33kPnU8SSvlrOzY3Q0/b3 V5q5WN8tmu02ubD5jq9ade3cJnFh44j3bKaJfcemJ1/XxM1722KaXfDgzjhiTG7HZ60t 7ZjQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756968926; x=1757573726; 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=JxE+Xj3ugJHUcqN9a7F7aAsq//VgXJ8T/JzaLukZcD8=; b=IIfm3fifx3/Jm7YMbVZucfHUa4Ca40zVb1QR6YnLEX49sR/WrNoEF7L4uLicqylQeI s62DCBxXlkPrCNil5xMU7l496gV1WhI3GhPNAU7sr0l/14X9sSKFCOXoOTPVNyPVJEGx ePmSFVTA76ef9XbNEZJgzKw7RA7lhHMXXy+BZmghl5GNLm7KJSXfBxZB4p7uksbkHXEG c7mAzdb4nbqIDezuty5AKyRppqZp33JBUfAIimelqgglZds2+iW2pOC9UfUrpQ6YdCCy /rdtYJ39e6Z395BRP9eK5RLzyfkve9KUvg/YeoqPAvj5phGANRRj7sCXnlDV88rSaPIH rM7w== X-Gm-Message-State: AOJu0YyoKrSj0keHxO7vXjFEZUV+7SbEiv1JZQe+fiNV6uy0ft5ugBbM lgo2UfX/mABfp0HVaT6Du2yWVbxvv1KZmgmXkUujxgY6cz5kVGlMF8zdlx7MO1mmF4OUM1+0JTt TcA== X-Google-Smtp-Source: AGHT+IGoSYrzfeX5RVnQxdwXezOdW2R08Qc3RSSjnfBqAMU0OXMTqtk5sU6FDVAGyyN96wJHsxaP6juUfQ== X-Received: from pfbdh11.prod.google.com ([2002:a05:6a00:478b:b0:771:e00d:cee]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:3d1c:b0:243:ca15:f84c with SMTP id adf61e73a8af0-243d6f0bc0bmr25910996637.37.1756968926069; Wed, 03 Sep 2025 23:55:26 -0700 (PDT) Date: Wed, 3 Sep 2025 23:54:45 -0700 In-Reply-To: <20250904065453.639610-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250904065453.639610-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.338.gd7d06c2dae-goog Message-ID: <20250904065453.639610-16-sagis@google.com> Subject: [PATCH v10 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 2.51.0.338.gd7d06c2dae-goog