From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C8FE2C433F5 for ; Tue, 28 Sep 2021 13:03:58 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6EC3061139 for ; Tue, 28 Sep 2021 13:03:58 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 6EC3061139 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:54872 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mVCm5-0003sC-DD for qemu-devel@archiver.kernel.org; Tue, 28 Sep 2021 09:03:57 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:38760) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mVCaG-0006Yf-PU for qemu-devel@nongnu.org; Tue, 28 Sep 2021 08:51:44 -0400 Received: from mail-ed1-x535.google.com ([2a00:1450:4864:20::535]:43575) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mVCaB-0001Ru-No for qemu-devel@nongnu.org; Tue, 28 Sep 2021 08:51:41 -0400 Received: by mail-ed1-x535.google.com with SMTP id v10so78451976edj.10 for ; Tue, 28 Sep 2021 05:51:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=DX+n3kP2aHkHKaZjc+ogt7pnXtaudF677+IzkUFKWcc=; b=FZpabySlet68K3J11vL+SlnpqrcVvVuq9DdVMVraNjiLit6zVhJ0lXrVax5Re/fFe6 5mURSBJWYiSMk8VB+CZZaL+Rc+JNLk+L6iew3hm8hP8BeaFyXN9CjiRz8ENLfcDGWRIH G3x6PwbcGaw1WRc3qjUswuW4ywsyjjr1gGRfWHyipZPvTldKWviTA3l1yqKQ1Aqxspgx Rp2AhXl+ZcdgaQOPBeL194EYHLbWvkJlRP29Ylf7isQfaWL/Ghztzi7AehwXg7Z4TfNY hckRy+6Ir/MyunPq2qa/RvFrKCXIjBAbT5K40+mYderlrP5HOx35cApNqngZRhwwMr56 g4GA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=DX+n3kP2aHkHKaZjc+ogt7pnXtaudF677+IzkUFKWcc=; b=MbvsdnIgm9hC7DDNKuJYzw9QgPFE9qKSkyb2RuxAzrwQbIeiifZSVojkdszWj5j9Ew k9Ct8cVNJ7u6mzTWotZDvKImfZbzzJpvfAHClYlXOzFq75Cm9cNqjPAgI9qUNZ/RALMb /2kXqT1oBsCGssM9mkKZ/5Vw86o6+4KHcDep6zbRJTD7J4ig/1+xg8aBya69G31mRQMk hwzNQRd6d/MSUePIKIVqVYmJcLJ4Q17+CBAQzi/mRTn7HttX0emNa1/0Oq3ccC+hYct0 MyKRfIru2qLm6K0eq6CHGXphYd1ijGkes4oSz4ANGhye3uJ3IpgwfR6mXiZinwvJZcNv v6Dw== X-Gm-Message-State: AOAM530WkIP0ztlLGlqDkiS7sU1x2AvgrnMrtwS0XM/aQ4Hxt0mrTKJg DMnHdcvuhT6PWSUPP0Z9DJaG4mnfUb4= X-Google-Smtp-Source: ABdhPJxuGanlG0Yto/MDvveAcJpwr6gpadf20J8HmQr8YQ4vRw3ofvKhkRVBh8xbSgwPNo5jgJwzMA== X-Received: by 2002:a05:6402:21d2:: with SMTP id bi18mr7183805edb.21.1632833494784; Tue, 28 Sep 2021 05:51:34 -0700 (PDT) Received: from avogadro.lan ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id p24sm12641685edq.27.2021.09.28.05.51.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Sep 2021 05:51:34 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 20/33] i386: acpi: Add SGX EPC entry to ACPI tables Date: Tue, 28 Sep 2021 14:51:03 +0200 Message-Id: <20210928125116.183620-21-pbonzini@redhat.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210928125116.183620-1-pbonzini@redhat.com> References: <20210928125116.183620-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::535; envelope-from=paolo.bonzini@gmail.com; helo=mail-ed1-x535.google.com X-Spam_score_int: -14 X-Spam_score: -1.5 X-Spam_bar: - X-Spam_report: (-1.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Yang Zhong , Sean Christopherson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Sean Christopherson The ACPI Device entry for SGX EPC is essentially a hack whose primary purpose is to provide software with a way to autoprobe SGX support, e.g. to allow software to implement SGX support as a driver. Details on the individual EPC sections are not enumerated through ACPI tables, i.e. software must enumerate the EPC sections via CPUID. Furthermore, software expects to see only a single EPC Device in the ACPI tables regardless of the number of EPC sections in the system. However, several versions of Windows do rely on the ACPI tables to enumerate the address and size of the EPC. So, regardless of the number of EPC sections exposed to the guest, create exactly *one* EPC device with a _CRS entry that spans the entirety of all EPC sections (which are guaranteed to be contiguous in Qemu). Note, NUMA support for EPC memory is intentionally not considered as enumerating EPC NUMA information is not yet defined for bare metal. Signed-off-by: Sean Christopherson Signed-off-by: Yang Zhong Message-Id: <20210719112136.57018-20-yang.zhong@intel.com> Signed-off-by: Paolo Bonzini --- hw/i386/acpi-build.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c index dfaa47cdc2..f4d6ae3d02 100644 --- a/hw/i386/acpi-build.c +++ b/hw/i386/acpi-build.c @@ -1841,6 +1841,28 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, } #endif + if (pcms->sgx_epc.size != 0) { + uint64_t epc_base = pcms->sgx_epc.base; + uint64_t epc_size = pcms->sgx_epc.size; + + dev = aml_device("EPC"); + aml_append(dev, aml_name_decl("_HID", aml_eisaid("INT0E0C"))); + aml_append(dev, aml_name_decl("_STR", + aml_unicode("Enclave Page Cache 1.0"))); + crs = aml_resource_template(); + aml_append(crs, + aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, + AML_MAX_FIXED, AML_NON_CACHEABLE, + AML_READ_WRITE, 0, epc_base, + epc_base + epc_size - 1, 0, epc_size)); + aml_append(dev, aml_name_decl("_CRS", crs)); + + method = aml_method("_STA", 0, AML_NOTSERIALIZED); + aml_append(method, aml_return(aml_int(0x0f))); + aml_append(dev, method); + + aml_append(sb_scope, dev); + } aml_append(dsdt, sb_scope); /* copy AML table into ACPI tables blob and patch header there */ -- 2.31.1