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 DC1F631BCB5 for ; Thu, 25 Sep 2025 17:29:25 +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=JiJsegTj2Ce/ozuD/SR162gIZpa6p18Wb/CIxMdtpZrlSpBBinjWkCK3Gx0eptpevi9PTw0A9b0xjveTn/jOe9ETx2z75FvOsXb7s+NZdtv7JmOvNpRbe0y+GghPCOeHxf9Xv/YQbfhIwWetfe0h8J99pecdcm5qeLCaX5CATjk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758821367; c=relaxed/simple; bh=rY4Ycxq8QNFfTlKpgKYsuMxxweY8g7PDper3LW3OHIM=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=Jry04bMl3xVQeJzQDvpOTrQkvOjnMMVm8rw/jR9bJ6d0CamoyrpBMjaLcOAgxSZiDxg0NwGpL7bxwLCh3uVKd8TRI9hxXOtfocv417Oa6BD6YxTJziX2ALetjiTF422dSN+eTGJnoUpkoSDMvK8UsxTCbcuJ8MFSy/ab9g3JDpI= 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=PjrKtQUa; 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="PjrKtQUa" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-32eb864fe90so1671897a91.3 for ; Thu, 25 Sep 2025 10:29:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1758821365; x=1759426165; 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=+Va1zA5ixIcyoN0vd3aUHA8j5zm7YdEz/wv0z/nEjSI=; b=PjrKtQUasguwa1WvXPLxu4Wc1i5O3pTuPDGhbO4bw4wXERkIsW9sC9VqTa8ocy9nWa J7b8uzlpcWXNidm/v/H2ZCwzuNhr1sRRaaWur2HJ/j4S6hTM+hiludjA/AiMgp29Tfc1 bin52bNvbwlkjEpDfnz7txRbIf3VJOHhS5x1Rn8jmyFKmN4X8Z+mgnUrJ9vBhRhBjv3z J+UFQzu4oRzjf0jhHA0B+bYmOYnurbx7WSIQEkh9TDvS4wWoqpMLA2uTU6K9gWqb+sx6 4qZv17FVoMqLFT/zIcsGzPIJ9mudQppHoLNm4gjXo7ea/Y2jWrdKozjpQacYKgxkFlRh WG2A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1758821365; x=1759426165; 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=+Va1zA5ixIcyoN0vd3aUHA8j5zm7YdEz/wv0z/nEjSI=; b=CPFbrm9w29dDTKy3+Orwuat5nHTRNvL1t0Q7IaN/iqxL4mgGENGDSa9p5keI52g8hg ZMWovL7/4rEDaZBVZoT/aUJ7iAEqFpCI2Ew2CXiMbUA1Re6SqUTRETGbTEI8/T8+NrES Y82kNV12mlBrar9ocyw1oIU0qljzrPOLGySHeJNELK8ZCgHcgy7ozwn5o8yba4ImVLN8 P0c3RBlnx8ue+g20w8x+LZCP1f0di23R0cllTf1j48CcmKq2rDPSZUxO/GB4eDZLGj4N 5Y/q3aWwQEXhVZ1NJ/5/ei2l7ya20ToIML60ccZ03gc32e1Uz7pbINh7OmoaOyPsJBZ0 ULNA== X-Gm-Message-State: AOJu0YyRHMkl2wxUjwiG7MrURgslIxzIJgvoE3LVWQuyCJBLS/jCq7A9 QCGSgLSgDz5S2NLHTQ47he7w0Im5oRzkDZB1fBjXyWWryn2O657Ke6gnk6oJyy+yYRCFzy9CuZS ypA== X-Google-Smtp-Source: AGHT+IGO+kzY6zrc5L2YijkKRhK8hVWCvgdGtGL5epGOc/asjJqUyFVd0BNC8oxEFQsxsY1921qPWa7JOQ== X-Received: from pjbhl7.prod.google.com ([2002:a17:90b:1347:b0:32e:d644:b829]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:5343:b0:32d:17ce:49d5 with SMTP id 98e67ed59e1d1-3342a2b08bcmr4282494a91.23.1758821365169; Thu, 25 Sep 2025 10:29:25 -0700 (PDT) Date: Thu, 25 Sep 2025 10:28:44 -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: <20250925172851.606193-17-sagis@google.com> Subject: [PATCH v11 16/21] KVM: selftests: Call KVM_TDX_INIT_VCPU when creating a new TDX 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 , 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" TDX VMs need to issue the KVM_TDX_INIT_VCPU ioctl for each vcpu after vcpu creation. Since the cpuids for TD are managed by the TDX module, read the values virtualized for the TD using KVM_TDX_GET_CPUID and set them in kvm using KVM_SET_CPUID2 so that kvm has an accurate view of the VM cpuid values. Signed-off-by: Sagi Shahar --- .../testing/selftests/kvm/lib/x86/processor.c | 35 ++++++++++++++----- 1 file changed, 27 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testin= g/selftests/kvm/lib/x86/processor.c index 63b751253d1b..f7ddea3b2044 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -687,6 +687,19 @@ vm_vaddr_t kvm_allocate_vcpu_stack(struct kvm_vm *vm) return stack_vaddr; } =20 +static void vm_tdx_vcpu_add(struct kvm_vm *vm, struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid2 *cpuid; + + cpuid =3D allocate_kvm_cpuid2(MAX_NR_CPUID_ENTRIES); + vm_tdx_vcpu_ioctl(vcpu, KVM_TDX_GET_CPUID, 0, cpuid); + vcpu_init_cpuid(vcpu, cpuid); + free(cpuid); + vm_tdx_vcpu_ioctl(vcpu, KVM_TDX_INIT_VCPU, 0, NULL); + + vm_tdx_load_vcpu_boot_parameters(vm, vcpu); +} + struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, uint32_t vcpu_id) { struct kvm_mp_state mp_state; @@ -694,15 +707,21 @@ struct kvm_vcpu *vm_arch_vcpu_add(struct kvm_vm *vm, = uint32_t vcpu_id) struct kvm_vcpu *vcpu; =20 vcpu =3D __vm_vcpu_add(vm, vcpu_id); - vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid()); - vcpu_init_sregs(vm, vcpu); - vcpu_init_xcrs(vm, vcpu); =20 - /* Setup guest general purpose registers */ - vcpu_regs_get(vcpu, ®s); - regs.rflags =3D regs.rflags | 0x2; - regs.rsp =3D kvm_allocate_vcpu_stack(vm); - vcpu_regs_set(vcpu, ®s); + if (is_tdx_vm(vm)) { + vm_tdx_vcpu_add(vm, vcpu); + } else { + vcpu_init_cpuid(vcpu, kvm_get_supported_cpuid()); + + vcpu_init_sregs(vm, vcpu); + vcpu_init_xcrs(vm, vcpu); + + /* Setup guest general purpose registers */ + vcpu_regs_get(vcpu, ®s); + regs.rflags =3D regs.rflags | 0x2; + regs.rsp =3D kvm_allocate_vcpu_stack(vm); + vcpu_regs_set(vcpu, ®s); + } =20 /* Setup the MP state */ mp_state.mp_state =3D 0; --=20 2.51.0.536.g15c5d4f767-goog