From nobody Sun Oct 5 07:26:09 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 AA1E12741D0 for ; Thu, 7 Aug 2025 20:16:45 +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=1754597807; cv=none; b=ulgU0SzlO/PFQ+3bZ3uw80s3Va5p3+HHAbMM0AJLGUzsJD1UakIB1ljfgnEhZrkNHA05DVMkbp2MuKrKuz9Y3IpgiMjC9uzuvCgwo36fg5zYMgqCAReaNld0giXZTIV2mByrPoAf2F3bwUtnDBj7ir/a1lDhVQRfs2K+UX/yBGc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754597807; c=relaxed/simple; bh=PjccjVZAkRo3Xaj2t4Gs6E0VQOqy8N8IPb4hRIjeToc=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=UG/FrFvhPBOb87k/Mbm07D/67XBv6IEbSEJ3RjlYomT54EhKIOL026v7fWez1frRyAiPkePnOG8Wjy8aXwETdnZoABb4yfTt0UYkDgOKAsaGywXTpENdTOGYqtROkZNtJpWXBeeUxEqAQUODHclFB5ZRbvKXtb0rZwBXfbpt9pE= 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=ODLv0IeJ; 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="ODLv0IeJ" Received: by mail-pj1-f73.google.com with SMTP id 98e67ed59e1d1-315af08594fso1755909a91.2 for ; Thu, 07 Aug 2025 13:16:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1754597805; x=1755202605; 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=6CCwqPAnoUPSp9AFnzO+u9qSxg+vLNhYcEQUdXsIl0A=; b=ODLv0IeJlzv+ykKM2JlI8sgCvpsyEBU82LrrYCfgJtoWLd5JjXMCp8vrHtHzwMSwRQ pHPdEdujWdMidBsByJsMCEqIx5MJq60mv3Wwxf1ri2+oqmPYC7kZpWBicRANEvLx0E60 dp50QgElcCAB1Z8ub2INLLhBPuxR/EIlwwJ6JXREti9DUYDuSjdShmo9NJLfrohwZ3DC br1f78L1n7L3Jlq8wAZykqZOiijZnO5Y+iOUi9w/9wRJ/jZWvYYsCNNL2+UfGhf73Bzv xduGF+s9BO7GG7ZQkJCHo91zpGJPIJ7QKT476GhAxy0LsW7XntBGlUQM8RtaKpmkCYSU uwiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1754597805; x=1755202605; 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=6CCwqPAnoUPSp9AFnzO+u9qSxg+vLNhYcEQUdXsIl0A=; b=EDXglbt38mZR47yjmrmFiMK5dRWNjcG7wN+onEiA5hR1Zew/Rx7mSMh3edn3C4nX2i /Vhw67b5YQYjhQEo/0z/TKqLW3SxlC3lrIPdYy9bAScboiATcM3MDqhD3CYpa+1vCIIY c5uWrQWkQPSAvfzFrdvNWf7xV3lNg/nC5ZCqfweCvB0AVV0LxjHgGCGciocmP0Hd5lTp LPfkOXymp4xE9CbZMo0eepYgwR2yiE3N2p5JZyNS0YMt5Uw49k+NtMA3ldMJOdKcra+C Agenj4ct2CBy/wnkufUCuNW/39ETmeD2y04iT7db6R6Opdxi7ANTKpoV/Elr2XSEYGWu rEdQ== X-Gm-Message-State: AOJu0YwvtjjSdpXabgL8nJ5WBrIMGFT0h9TxXcRSgGCsCbgvVxArJH/R tSfi6dnK9OPKYzHl3faiTMmbzgYy4QOtArQAJNKAT5TrUqpy9Byth/1uJICr0mGqkDmZwBpbha8 00g== X-Google-Smtp-Source: AGHT+IFrTj53N5DZXacA6l1rqtKAvbn+AVo773jcURpzGEwI4lTM8ssPebkro7Dg+daTfE66YB9jLp4D9w== X-Received: from pjpo16.prod.google.com ([2002:a17:90a:9f90:b0:311:ff32:a85d]) (user=sagis job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:1fc3:b0:31f:1757:f9f8 with SMTP id 98e67ed59e1d1-32183b3f0d7mr395879a91.22.1754597804855; Thu, 07 Aug 2025 13:16:44 -0700 (PDT) Date: Thu, 7 Aug 2025 13:16:01 -0700 In-Reply-To: <20250807201628.1185915-1-sagis@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250807201628.1185915-1-sagis@google.com> X-Mailer: git-send-email 2.51.0.rc0.155.g4a0f42376b-goog Message-ID: <20250807201628.1185915-6-sagis@google.com> Subject: [PATCH v8 05/30] 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 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. Set shared bit position based on guest maximum physical address width instead of maximum physical address width, because that is what KVM uses, refer to setup_tdparams_eptp_controls(), and because maximum physical address width can be different. In the case of SRF, guest maximum physical address width is 48 because SRF does not support 5-level EPT, even though the maximum physical address width is 52. Co-developed-by: Adrian Hunter Signed-off-by: Adrian Hunter Signed-off-by: Isaku Yamahata Signed-off-by: Sagi Shahar --- tools/testing/selftests/kvm/lib/x86/processor.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testin= g/selftests/kvm/lib/x86/processor.c index d082d429e127..5718b5911b0a 100644 --- a/tools/testing/selftests/kvm/lib/x86/processor.c +++ b/tools/testing/selftests/kvm/lib/x86/processor.c @@ -1166,10 +1166,19 @@ 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); + 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 if (vm->type =3D=3D KVM_X86_TDX_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.sev_fd =3D -1; + vm->arch.s_bit =3D 1ULL << (gpa_bits - 1); + vm->arch.c_bit =3D 0; + vm->gpa_tag_mask =3D vm->arch.s_bit; } else { vm->arch.sev_fd =3D -1; } --=20 2.51.0.rc0.155.g4a0f42376b-goog