From patchwork Thu Feb 29 06:36:51 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13576616 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 3283EC54798 for ; Thu, 29 Feb 2024 06:45:52 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rfa76-0006XI-O5; Thu, 29 Feb 2024 01:41:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rfa6B-00053I-J8 for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:40:55 -0500 Received: from mgamail.intel.com ([192.198.163.15]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rfa68-0004q0-WA for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:40:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709188853; x=1740724853; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=pnXXY7cV6/NbWtgIlxRbIk+WzBzlg8AivppAS95ukro=; b=Xk9HZ3cYUKl80Nz7lT7XUdw20b+JgCry4z+xmAXywnqy/du+pKQRTOMY 3y6KNsR/dQwYjg5W3Gl0l9xdaXXGLp4Qxe+mzhYP/TDJzPxntQ6F1thTC V8/7B4roU9Zc8JS5WHzdjHDyKZGHSXzxgDnFfenUL9XU+A/+FVI32sQnR Z+YXEF+gwz3JV98mieismU29rwNRqoypVQIzsE8KHSVMmbOEn2BVqsQ1j OHSJi2UhAeX2xgSZ52hbae+gHskL989B/4iJZD/OcM9bCl1+bLxkVXdOF Pgs1C2zbRiqFvtjlbCxmVC0Eoth1KHfzMupK658X+tRLQZM9N0UeX/eEB Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10998"; a="3802816" X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="3802816" Received: from orviesa007.jf.intel.com ([10.64.159.147]) by fmvoesa109.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 28 Feb 2024 22:40:51 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="8075561" Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa007.jf.intel.com with ESMTP; 28 Feb 2024 22:40:45 -0800 From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , Eduardo Habkost , Marcel Apfelbaum , =?utf-8?q?Philippe_Mathieu-D?= =?utf-8?q?aud=C3=A9?= , Yanan Wang , "Michael S. Tsirkin" , Richard Henderson , Ani Sinha , Peter Xu , Cornelia Huck , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: kvm@vger.kernel.org, qemu-devel@nongnu.org, Michael Roth , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang , xiaoyao.li@intel.com Subject: [PATCH v5 30/65] i386/tdx: Support user configurable mrconfigid/mrowner/mrownerconfig Date: Thu, 29 Feb 2024 01:36:51 -0500 Message-Id: <20240229063726.610065-31-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240229063726.610065-1-xiaoyao.li@intel.com> References: <20240229063726.610065-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.15; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -5 X-Spam_score: -0.6 X-Spam_bar: / X-Spam_report: (-0.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.102, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.596, HK_RANDOM_FROM=0.999, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Isaku Yamahata Three sha384 hash values, mrconfigid, mrowner and mrownerconfig, of a TD can be provided for TDX attestation. Detailed meaning of them can be found: https://lore.kernel.org/qemu-devel/31d6dbc1-f453-4cef-ab08-4813f4e0ff92@intel.com/ Allow user to specify those values via property mrconfigid, mrowner and mrownerconfig. They are all in base64 format. example -object tdx-guest, \ mrconfigid=ASNFZ4mrze8BI0VniavN7wEjRWeJq83vASNFZ4mrze8BI0VniavN7wEjRWeJq83v,\ mrowner=ASNFZ4mrze8BI0VniavN7wEjRWeJq83vASNFZ4mrze8BI0VniavN7wEjRWeJq83v,\ mrownerconfig=ASNFZ4mrze8BI0VniavN7wEjRWeJq83vASNFZ4mrze8BI0VniavN7wEjRWeJq83v Signed-off-by: Isaku Yamahata Co-developed-by: Xiaoyao Li Signed-off-by: Xiaoyao Li --- Changes in v5: - refine the description of QAPI properties and add description of default value when not specified; Changes in v4: - describe more of there fields in qom.json - free the old value before set new value to avoid memory leak in _setter(); (Daniel) Changes in v3: - use base64 encoding instread of hex-string; --- qapi/qom.json | 17 ++++++++- target/i386/kvm/tdx.c | 87 +++++++++++++++++++++++++++++++++++++++++++ target/i386/kvm/tdx.h | 3 ++ 3 files changed, 106 insertions(+), 1 deletion(-) diff --git a/qapi/qom.json b/qapi/qom.json index 89ed89b9b46e..cac875349a3a 100644 --- a/qapi/qom.json +++ b/qapi/qom.json @@ -905,10 +905,25 @@ # pages. Some guest OS (e.g., Linux TD guest) may require this to # be set, otherwise they refuse to boot. # +# @mrconfigid: ID for non-owner-defined configuration of the guest TD, +# e.g., run-time or OS configuration (base64 encoded SHA384 digest). +# (A default value 0 of SHA384 is used when absent). +# +# @mrowner: ID for the guest TD’s owner (base64 encoded SHA384 digest). +# (A default value 0 of SHA384 is used when absent). +# +# @mrownerconfig: ID for owner-defined configuration of the guest TD, +# e.g., specific to the workload rather than the run-time or OS +# (base64 encoded SHA384 digest). (A default value 0 of SHA384 is +# used when absent). +# # Since: 9.0 ## { 'struct': 'TdxGuestProperties', - 'data': { '*sept-ve-disable': 'bool' } } + 'data': { '*sept-ve-disable': 'bool', + '*mrconfigid': 'str', + '*mrowner': 'str', + '*mrownerconfig': 'str' } } ## # @ThreadContextProperties: diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index d0ad4f57b5d0..4ce2f1d082ce 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -13,6 +13,7 @@ #include "qemu/osdep.h" #include "qemu/error-report.h" +#include "qemu/base64.h" #include "qapi/error.h" #include "qom/object_interfaces.h" #include "standard-headers/asm-x86/kvm_para.h" @@ -516,6 +517,7 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp) X86CPU *x86cpu = X86_CPU(cpu); CPUX86State *env = &x86cpu->env; g_autofree struct kvm_tdx_init_vm *init_vm = NULL; + size_t data_len; int r = 0; object_property_set_bool(OBJECT(cpu), "pmu", false, &error_abort); @@ -528,6 +530,38 @@ int tdx_pre_create_vcpu(CPUState *cpu, Error **errp) init_vm = g_malloc0(sizeof(struct kvm_tdx_init_vm) + sizeof(struct kvm_cpuid_entry2) * KVM_MAX_CPUID_ENTRIES); +#define SHA384_DIGEST_SIZE 48 + + if (tdx_guest->mrconfigid) { + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrconfigid, + strlen(tdx_guest->mrconfigid), &data_len, errp); + if (!data || data_len != SHA384_DIGEST_SIZE) { + error_setg(errp, "TDX: failed to decode mrconfigid"); + return -1; + } + memcpy(init_vm->mrconfigid, data, data_len); + } + + if (tdx_guest->mrowner) { + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrowner, + strlen(tdx_guest->mrowner), &data_len, errp); + if (!data || data_len != SHA384_DIGEST_SIZE) { + error_setg(errp, "TDX: failed to decode mrowner"); + return -1; + } + memcpy(init_vm->mrowner, data, data_len); + } + + if (tdx_guest->mrownerconfig) { + g_autofree uint8_t *data = qbase64_decode(tdx_guest->mrownerconfig, + strlen(tdx_guest->mrownerconfig), &data_len, errp); + if (!data || data_len != SHA384_DIGEST_SIZE) { + error_setg(errp, "TDX: failed to decode mrownerconfig"); + return -1; + } + memcpy(init_vm->mrownerconfig, data, data_len); + } + r = kvm_vm_enable_cap(kvm_state, KVM_CAP_MAX_VCPUS, 0, ms->smp.cpus); if (r < 0) { error_setg(errp, "Unable to set MAX VCPUS to %d", ms->smp.cpus); @@ -574,6 +608,51 @@ static void tdx_guest_set_sept_ve_disable(Object *obj, bool value, Error **errp) } } +static char * tdx_guest_get_mrconfigid(Object *obj, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + return g_strdup(tdx->mrconfigid); +} + +static void tdx_guest_set_mrconfigid(Object *obj, const char *value, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + g_free(tdx->mrconfigid); + tdx->mrconfigid = g_strdup(value); +} + +static char * tdx_guest_get_mrowner(Object *obj, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + return g_strdup(tdx->mrowner); +} + +static void tdx_guest_set_mrowner(Object *obj, const char *value, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + g_free(tdx->mrowner); + tdx->mrowner = g_strdup(value); +} + +static char * tdx_guest_get_mrownerconfig(Object *obj, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + return g_strdup(tdx->mrownerconfig); +} + +static void tdx_guest_set_mrownerconfig(Object *obj, const char *value, Error **errp) +{ + TdxGuest *tdx = TDX_GUEST(obj); + + g_free(tdx->mrownerconfig); + tdx->mrownerconfig = g_strdup(value); +} + /* tdx guest */ OBJECT_DEFINE_TYPE_WITH_INTERFACES(TdxGuest, tdx_guest, @@ -593,6 +672,14 @@ static void tdx_guest_init(Object *obj) object_property_add_bool(obj, "sept-ve-disable", tdx_guest_get_sept_ve_disable, tdx_guest_set_sept_ve_disable); + object_property_add_str(obj, "mrconfigid", + tdx_guest_get_mrconfigid, + tdx_guest_set_mrconfigid); + object_property_add_str(obj, "mrowner", + tdx_guest_get_mrowner, tdx_guest_set_mrowner); + object_property_add_str(obj, "mrownerconfig", + tdx_guest_get_mrownerconfig, + tdx_guest_set_mrownerconfig); } static void tdx_guest_finalize(Object *obj) diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index 0df910725b52..2697e6bdfb1d 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -21,6 +21,9 @@ typedef struct TdxGuest { bool initialized; uint64_t attributes; /* TD attributes */ + char *mrconfigid; /* base64 encoded sha348 digest */ + char *mrowner; /* base64 encoded sha348 digest */ + char *mrownerconfig; /* base64 encoded sha348 digest */ } TdxGuest; #ifdef CONFIG_TDX