From nobody Fri Dec 19 17:34:30 2025 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1709189213; cv=none; d=zohomail.com; s=zohoarc; b=c2RxBePBWGP8C9CU9YbxaOLOtDC0dizpp9/c7dG2mOG0Y9HhB2vu4PJJEFx7tvb9Cq6DqfsF4qiSNpfPh1lxsYaozeB8a9EAHJ1IjZLjVx7nAn+zBMpMuADQ7IBQq97y8OKvHtKUZTIcvyR4mfpfedK622cVvwgoT9KTBuBWpRk= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1709189213; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=fsSseTpR54P1y3lDPhN75xc8MiOooAks7kgQM0cu5Lw=; b=DIEfEow7ZzQGdlSIopewkBpqjdVr+cg/OAr+h8BcFgSf10rVO46FfjDuAjrVD5ojevXOyFh8BdXhuKRq6lGgDuWMsKsX040pXtmhEGrca2Ds/NNwhG66bx0fc7IBCw/ckyOuIoMiQe6dN615+h14qT+sN3kIOCCGkpbBoa2Q+L0= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=@intel.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1709189213008762.6846791272599; Wed, 28 Feb 2024 22:46:53 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rfa8c-0001NQ-2a; Thu, 29 Feb 2024 01:43:26 -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 1rfa8Y-0001JW-KU for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:43:23 -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 1rfa8U-0005FT-Ce for qemu-devel@nongnu.org; Thu, 29 Feb 2024 01:43:20 -0500 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 22:43:16 -0800 Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa007.jf.intel.com with ESMTP; 28 Feb 2024 22:43:11 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1709188998; x=1740724998; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=VKrXmZ4yWCwN3uMt3MgNU2umCNe3ZwiWGHCR+mMGlKk=; b=ddItMtx5KLOtVBtv2yK9qn4D0yp7srku8Jf6568wpETLtYw6935NcRDI HjT+L+ACSNYuHCJuKhb20C/s/4rOKgExxY2V1IEFePgecsupyYUpmlbs8 1tb4rroDFfblmIg0S2hrM2FpUX+yQ7krT1EZ6ra3QAe82G31OVyYodaY2 Bf5CdOo+6UpRVQNXHC5ESGescnd8eVoH2+4Sk4L0QYUeJsxM38vo/WGtn jEWQFReTFxuHpYq7qZFrIY+04qo5HETbxWebVbAMyuDutu7341MvT/uGN iP/kZ2BPAvHtMBhS+roK43gp1avAqXZhkGf+dpYBv/1hRBlGuqjYVzaj6 w==; X-IronPort-AV: E=McAfee;i="6600,9927,10998"; a="3803137" X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="3803137" X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,192,1705392000"; d="scan'208";a="8076173" From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , Eduardo Habkost , Marcel Apfelbaum , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Yanan Wang , "Michael S. Tsirkin" , Richard Henderson , Ani Sinha , Peter Xu , Cornelia Huck , =?UTF-8?q?Daniel=20P=2E=20Berrang=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 52/65] i386/tdx: Wire TDX_REPORT_FATAL_ERROR with GuestPanic facility Date: Thu, 29 Feb 2024 01:37:13 -0500 Message-Id: <20240229063726.610065-53-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 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @intel.com) X-ZM-MESSAGEID: 1709189214336100003 Content-Type: text/plain; charset="utf-8" Integrate TDX's TDX_REPORT_FATAL_ERROR into QEMU GuestPanic facility Originated-from: Isaku Yamahata Signed-off-by: Xiaoyao Li --- Changes in v5: - mention additional error information in gpa when it presents; - refine the documentation; (Markus) Changes in v4: - refine the documentation; (Markus) Changes in v3: - Add docmentation of new type and struct; (Daniel) - refine the error message handling; (Daniel) --- qapi/run-state.json | 31 +++++++++++++++++++++-- system/runstate.c | 58 +++++++++++++++++++++++++++++++++++++++++++ target/i386/kvm/tdx.c | 24 +++++++++++++++++- 3 files changed, 110 insertions(+), 3 deletions(-) diff --git a/qapi/run-state.json b/qapi/run-state.json index dd0770b379e5..b71dd1884eb6 100644 --- a/qapi/run-state.json +++ b/qapi/run-state.json @@ -483,10 +483,12 @@ # # @s390: s390 guest panic information type (Since: 2.12) # +# @tdx: tdx guest panic information type (Since: 9.0) +# # Since: 2.9 ## { 'enum': 'GuestPanicInformationType', - 'data': [ 'hyper-v', 's390' ] } + 'data': [ 'hyper-v', 's390', 'tdx' ] } =20 ## # @GuestPanicInformation: @@ -501,7 +503,8 @@ 'base': {'type': 'GuestPanicInformationType'}, 'discriminator': 'type', 'data': {'hyper-v': 'GuestPanicInformationHyperV', - 's390': 'GuestPanicInformationS390'}} + 's390': 'GuestPanicInformationS390', + 'tdx' : 'GuestPanicInformationTdx'}} =20 ## # @GuestPanicInformationHyperV: @@ -564,6 +567,30 @@ 'psw-addr': 'uint64', 'reason': 'S390CrashReason'}} =20 +## +# @GuestPanicInformationTdx: +# +# TDX Guest panic information specific to TDX, as specified in the +# "Guest-Hypervisor Communication Interface (GHCI) Specification", +# section TDG.VP.VMCALL. +# +# @error-code: TD-specific error code +# +# @message: Human-readable error message provided by the guest. Not +# to be trusted. +# +# @gpa: guest-physical address of a page that contains more verbose +# error information, as zero-terminated string. Present when the +# "GPA valid" bit (bit 63) is set in @error-code. +# +# +# Since: 9.0 +## +{'struct': 'GuestPanicInformationTdx', + 'data': {'error-code': 'uint64', + 'message': 'str', + '*gpa': 'uint64'}} + ## # @MEMORY_FAILURE: # diff --git a/system/runstate.c b/system/runstate.c index d6ab860ecaa7..3b628c38739d 100644 --- a/system/runstate.c +++ b/system/runstate.c @@ -519,6 +519,52 @@ static void qemu_system_wakeup(void) } } =20 +static char* tdx_parse_panic_message(char *message) +{ + bool printable =3D false; + char *buf =3D NULL; + int len =3D 0, i; + + /* + * Although message is defined as a json string, we shouldn't + * unconditionally treat it as is because the guest generated it and + * it's not necessarily trustable. + */ + if (message) { + /* The caller guarantees the NUL-terminated string. */ + len =3D strlen(message); + + printable =3D len > 0; + for (i =3D 0; i < len; i++) { + if (!(0x20 <=3D message[i] && message[i] <=3D 0x7e)) { + printable =3D false; + break; + } + } + } + + if (!printable && len) { + /* 3 =3D length of "%02x " */ + buf =3D g_malloc(len * 3); + for (i =3D 0; i < len; i++) { + if (message[i] =3D=3D '\0') { + break; + } else { + sprintf(buf + 3 * i, "%02x ", message[i]); + } + } + if (i > 0) + /* replace the last ' '(space) to NUL */ + buf[i * 3 - 1] =3D '\0'; + else + buf[0] =3D '\0'; + + return buf; + } + + return message; +} + void qemu_system_guest_panicked(GuestPanicInformation *info) { qemu_log_mask(LOG_GUEST_ERROR, "Guest crashed"); @@ -560,7 +606,19 @@ void qemu_system_guest_panicked(GuestPanicInformation = *info) S390CrashReason_str(info->u.s390.reason), info->u.s390.psw_mask, info->u.s390.psw_addr); + } else if (info->type =3D=3D GUEST_PANIC_INFORMATION_TYPE_TDX) { + qemu_log_mask(LOG_GUEST_ERROR, + " TDX guest reports fatal error:" + " error code: 0x%#" PRIx64 " error message:\"%s\= "\n", + info->u.tdx.error_code, + tdx_parse_panic_message(info->u.tdx.message)); + if (info->u.tdx.error_code & (1ull << 63)) { + qemu_log_mask(LOG_GUEST_ERROR, "Additional error informati= on " + "can be found at gpa page: 0x%#" PRIx64 "\n", + info->u.tdx.gpa); + } } + qapi_free_GuestPanicInformation(info); } } diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index 6cd72a26b970..811a3b81af99 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -20,6 +20,7 @@ #include "qom/object_interfaces.h" #include "standard-headers/asm-x86/kvm_para.h" #include "sysemu/kvm.h" +#include "sysemu/runstate.h" #include "sysemu/sysemu.h" #include "exec/ramblock.h" =20 @@ -1092,11 +1093,26 @@ static int tdx_handle_get_quote(X86CPU *cpu, struct= kvm_tdx_vmcall *vmcall) return 0; } =20 +static void tdx_panicked_on_fatal_error(X86CPU *cpu, uint64_t error_code, + char *message, uint64_t gpa) +{ + GuestPanicInformation *panic_info; + + panic_info =3D g_new0(GuestPanicInformation, 1); + panic_info->type =3D GUEST_PANIC_INFORMATION_TYPE_TDX; + panic_info->u.tdx.error_code =3D error_code; + panic_info->u.tdx.message =3D message; + panic_info->u.tdx.gpa =3D gpa; + + qemu_system_guest_panicked(panic_info); +} + static int tdx_handle_report_fatal_error(X86CPU *cpu, struct kvm_tdx_vmcall *vmcall) { uint64_t error_code =3D vmcall->in_r12; char *message =3D NULL; + uint64_t gpa =3D -1ull; =20 if (error_code & 0xffff) { error_report("TDX: REPORT_FATAL_ERROR: invalid error code: " @@ -1125,7 +1141,13 @@ static int tdx_handle_report_fatal_error(X86CPU *cpu, assert((char *)tmp =3D=3D message + GUEST_PANIC_INFO_TDX_MESSAGE_M= AX); } =20 - error_report("TD guest reports fatal error. %s\n", message ? : ""); +#define TDX_REPORT_FATAL_ERROR_GPA_VALID BIT_ULL(63) + if (error_code & TDX_REPORT_FATAL_ERROR_GPA_VALID) { + gpa =3D vmcall->in_r13; + } + + tdx_panicked_on_fatal_error(cpu, error_code, message, gpa); + return -1; } =20 --=20 2.34.1