From nobody Fri Oct 10 13:51:41 2025 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (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 DCC1524DCF0 for ; Fri, 13 Jun 2025 19:14:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749842060; cv=none; b=LST/0zXkhRPuabia6TvKDasQZ8iu5d9GBMIaRb+LLizOSrlsGO8UEhADmTKwmcOhuCIwUZOfY/QgnjlWHyplB7fTacB8HeSKyHE8AnQCJe55/Wu1KPAfpooV8LPH7pU0sQaTRw0PS4oME47G5OEmf0g3LKDYzo61JW+eMmS7AOU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749842060; c=relaxed/simple; bh=CZWxcHUWIhBEiyWiB8Z0zKn1NDMKTAMio7jW/0D0t28=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=tfz+RjSShweJh9jPijVjbvKOyFdAEunuiLE2Ao8UweekO3WBnbGEbwNUX60vn2ruHGcz/TWOD1NicaghZIELnAB+X17SCB+IA8jcZ8MhIO70ZsVf7zpKC65njOMl92M6YodE17sAYH2y0cuMXrfCNfM/9yxceO3ZO3spM5tbbKE= 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=xWzCelGk; arc=none smtp.client-ip=209.85.216.74 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="xWzCelGk" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-3122368d82bso3477074a91.0 for ; Fri, 13 Jun 2025 12:14:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1749842057; x=1750446857; 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=eGEpLUgqYonvIFbVng+CrES4z2xij5mJ0NWE1vzcGwk=; b=xWzCelGkIZ7DRH6ns82atV8v2tof31E8Eun95Ns7Z58js8RBx1UmOwMI6Xd5LANNjH 8XuZJwcdrGRMRBvvonc6Dbjn02EGZcgDShh4M6pmSeHaNDcDa8UKeplFzTt+js7pFlP9 ZYazBoXiOcDvmNUVhEsKInSj/2EjksOD8bPZmFDQWqY+osTNYOhQC1Yk6I/8c/Pf1Oi3 KS1ndoObwWcKA1FULqJzZ1BCjftrbn/FunB0xlhbua6f8lvK8MXpDY/H+6zwnlWOwP91 sHfy1oi2wVtmIgDBV+VGrdLGC45KIZuj1bpma1fZM0WiqahXbEz1qAzIIdWYPXdU7Pl2 Bm9w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1749842057; x=1750446857; 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=eGEpLUgqYonvIFbVng+CrES4z2xij5mJ0NWE1vzcGwk=; b=n8GcodqZrZHB2s1JvtnOrB0qFEFlJWjrtbWnz0fxFcH3i8oKsDp/eK0cRjpGnhgm5n l8hW6nb35cKbRFjDSgW76XyjTtdtMDUdzyoKFODjql65mlkU41RAXuN6VNh0ASTc/XSh aB9wzp2lGAr4vDH7KVCN9Nt9kYSl/vLIm8QcCZJyNnlSrtUOZcrjeH7zfrJ1xVpZXcA4 EA6ZFWVsGbOk9Wns6een2FLfUtXwGQo/prQ10yfILfwPewot9l8++mYuMmGw++mhV7EB feVxmAr/t081RFhVVdln1DTqBsmzlWoEOpKxPza1jE4rrJBaf9Wub1NMkg5RMvKVsiJg TMqw== X-Gm-Message-State: AOJu0Yzfhsl/7ljdfqESYNI6RJMhP50lHu/wQcFx0Co2yATBjsmbr7QX /LP69ikI43+yHAmE2Mps+o2cWl9iWF/z75ofqZTv1dgCb0yLSjmaL5DWQO3e0GAlRDLOlvJpBRQ ucQ== X-Google-Smtp-Source: AGHT+IGT7zb30UgV45DG78+lDcZgeztvaDSS1mxGV5acscZ5LWb0SsPW7nfVbgggzN4Y8RwiM+4/xNFPgg== X-Received: from pjgg14.prod.google.com ([2002:a17:90b:57ce:b0:2fc:2c9c:880]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:5284:b0:313:db0b:75e4 with SMTP id 98e67ed59e1d1-313f1d2a17emr1364010a91.33.1749842057235; Fri, 13 Jun 2025 12:14:17 -0700 (PDT) Date: Fri, 13 Jun 2025 12:13:30 -0700 In-Reply-To: <20250613191359.35078-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250613191359.35078-1-sagis@google.com> X-Mailer: git-send-email 2.50.0.rc2.692.g299adb8693-goog Message-ID: <20250613191359.35078-4-sagis@google.com> Subject: [PATCH v7 03/30] KVM: selftests: Store initial stack address in struct kvm_vcpu 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 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 TDX guests' registers cannot be initialized directly using vcpu_regs_set(), hence the stack pointer needs to be initialized by the guest itself, running boot code beginning at the reset vector. Store the stack address as part of struct kvm_vcpu so that it can be accessible later to be passed to the boot code for rsp initialization. Signed-off-by: Ackerley Tng Signed-off-by: Sagi Shahar --- tools/testing/selftests/kvm/include/kvm_util.h | 1 + tools/testing/selftests/kvm/lib/x86/processor.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/tools/testing/selftests/kvm/include/kvm_util.h b/tools/testing= /selftests/kvm/include/kvm_util.h index 9994861d2acb..5c4ca25803ac 100644 --- a/tools/testing/selftests/kvm/include/kvm_util.h +++ b/tools/testing/selftests/kvm/include/kvm_util.h @@ -58,6 +58,7 @@ struct kvm_vcpu { int fd; struct kvm_vm *vm; struct kvm_run *run; + vm_vaddr_t initial_stack_addr; #ifdef __x86_64__ struct kvm_cpuid2 *cpuid; #endif diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testin= g/selftests/kvm/lib/x86/processor.c index 002303e2a572..da6e9315ebe2 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -694,6 +694,8 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, ui= nt32_t vcpu_id) vcpu_init_sregs(vm, vcpu); vcpu_init_xcrs(vm, vcpu); =20 + vcpu->initial_stack_addr =3D stack_vaddr; + /* Setup guest general purpose registers */ vcpu_regs_get(vcpu, ®s); regs.rflags =3D regs.rflags | 0x2; --=20 2.50.0.rc2.692.g299adb8693-goog