From nobody Tue Nov 26 18:48:00 2024 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=1706153683; cv=none; d=zohomail.com; s=zohoarc; b=mzUEukLISffoKJ2c6S+8tQP9m+N5kftX4W9JCtV2wyRmyB/I8X4UZ3IjeAHxWRKLV7cxni67Xe/g1tB8z4IFN07QZH6wFJDIPtQAreMcZXkaUY9A0uZnSPN4nJQQwsH323WHcNrC5BFfSTxn5x4a6hDI8YpOhjgxQX57gSyLKUA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1706153683; 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=hYnhPW5v68d/Nvh9oHPL6sgUnXZ6cJgyA32/0XrtqnE=; b=LwonAgcDMhT4n4+bdcEPsnfhsTcxHqOppFHxFs2pki5M+pxb27SaaELewDDMCGH7idMZgGyENl8OIq9SWlp4woR2ry0GCmS8kkNOj3D7dfxRzbGOAiJUahTLdH0r1GYEZGpXolt+8jbEOCpNO9ERp8511xmXnpYY26yuixb2fFQ= 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 1706153682945872.8475449809767; Wed, 24 Jan 2024 19:34:42 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rSqSj-0005Mv-Ry; Wed, 24 Jan 2024 22:31:34 -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 1rSqSY-000558-NF for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:31:22 -0500 Received: from mgamail.intel.com ([192.198.163.10]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rSqSW-0001Dy-IT for qemu-devel@nongnu.org; Wed, 24 Jan 2024 22:31:22 -0500 Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Jan 2024 19:28:22 -0800 Received: from lxy-clx-4s.sh.intel.com ([10.239.48.52]) by orviesa005.jf.intel.com with ESMTP; 24 Jan 2024 19:28:17 -0800 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1706153480; x=1737689480; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fDht0M8HIC/RtXrcbvEg+wKbn8OdTSNmi650IuzqiJs=; b=VKLRfdl9/8NaoK+NHIHgTkxecv4Acjb3bl6itksJ22D3HnkB+68+fNHn EI1RQWf5PZgBNQAV2F4pJb9rqV1r9LZj3nSweliWFuWZvlR+K9JXVwQYe g8izySaw1cWi5OrZlrEbEoYnc9YCzUrr/mdo11IyhOMP5qFUjeGHsRM/q YT+VFA9abz4kqjoAZNPxQs/RLGTT7wgn35CXLou5gZKkEeVmq6KVSMP03 h9fKTuTve/Hw14DpLV9wwKBZFbWb382wUDPfvxZuPXT9ivb9iheBspR42 GIVHiySWj1/Xq/tNRSXwDkZ1BlURuNhY2jjCl5HXRtdTlK/lY4eHCopF3 Q==; X-IronPort-AV: E=McAfee;i="6600,9927,10962"; a="9430086" X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="9430086" X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="2086138" From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S . Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Cornelia Huck , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= , Eric Blake , Markus Armbruster , Marcelo Tosatti Cc: qemu-devel@nongnu.org, kvm@vger.kernel.org, xiaoyao.li@intel.com, Michael Roth , Sean Christopherson , Claudio Fontana , Gerd Hoffmann , Isaku Yamahata , Chenyi Qiang Subject: [PATCH v4 52/66] i386/tdx: Handle TDG.VP.VMCALL Date: Wed, 24 Jan 2024 22:23:14 -0500 Message-Id: <20240125032328.2522472-53-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240125032328.2522472-1-xiaoyao.li@intel.com> References: <20240125032328.2522472-1-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=192.198.163.10; envelope-from=xiaoyao.li@intel.com; helo=mgamail.intel.com X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.5, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HK_RANDOM_ENVFROM=0.999, HK_RANDOM_FROM=1, 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: 1706153685002100013 Content-Type: text/plain; charset="utf-8" TD guest can use TDG.VP.VMCALL to request termination with error message encoded in GPRs. Parse and print the error message, and terminate the TD guest in the handler. Signed-off-by: Xiaoyao Li --- target/i386/kvm/tdx.c | 39 +++++++++++++++++++++++++++++++++++++++ target/i386/kvm/tdx.h | 1 + 2 files changed, 40 insertions(+) diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index f1c60274c448..1c79032ca262 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -1078,6 +1078,43 @@ static int tdx_handle_get_quote(X86CPU *cpu, struct = kvm_tdx_vmcall *vmcall) return 0; } =20 +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; + + if (error_code & 0xffff) { + error_report("TDX: REPORT_FATAL_ERROR: invalid error code: " + "0x%lx\n", error_code); + return -1; + } + + /* it has optional message */ + if (vmcall->in_r14) { + uint64_t * tmp; + +#define GUEST_PANIC_INFO_TDX_MESSAGE_MAX 64 + message =3D g_malloc0(GUEST_PANIC_INFO_TDX_MESSAGE_MAX + 1); + + tmp =3D (uint64_t *)message; + /* The order is defined in TDX GHCI spec */ + *(tmp++) =3D cpu_to_le64(vmcall->in_r14); + *(tmp++) =3D cpu_to_le64(vmcall->in_r15); + *(tmp++) =3D cpu_to_le64(vmcall->in_rbx); + *(tmp++) =3D cpu_to_le64(vmcall->in_rdi); + *(tmp++) =3D cpu_to_le64(vmcall->in_rsi); + *(tmp++) =3D cpu_to_le64(vmcall->in_r8); + *(tmp++) =3D cpu_to_le64(vmcall->in_r9); + *(tmp++) =3D cpu_to_le64(vmcall->in_rdx); + message[GUEST_PANIC_INFO_TDX_MESSAGE_MAX] =3D '\0'; + assert((char *)tmp =3D=3D message + GUEST_PANIC_INFO_TDX_MESSAGE_M= AX); + } + + error_report("TD guest reports fatal error. %s\n", message ? : ""); + return -1; +} + static int tdx_handle_setup_event_notify_interrupt(X86CPU *cpu, struct kvm_tdx_vmcall *= vmcall) { @@ -1112,6 +1149,8 @@ static int tdx_handle_vmcall(X86CPU *cpu, struct kvm_= tdx_vmcall *vmcall) return tdx_handle_map_gpa(cpu, vmcall); case TDG_VP_VMCALL_GET_QUOTE: return tdx_handle_get_quote(cpu, vmcall); + case TDG_VP_VMCALL_REPORT_FATAL_ERROR: + return tdx_handle_report_fatal_error(cpu, vmcall); case TDG_VP_VMCALL_SETUP_EVENT_NOTIFY_INTERRUPT: return tdx_handle_setup_event_notify_interrupt(cpu, vmcall); default: diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index cedc7d7e226f..37fdd845f462 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -20,6 +20,7 @@ typedef struct TdxGuestClass { =20 #define TDG_VP_VMCALL_MAP_GPA 0x10001ULL #define TDG_VP_VMCALL_GET_QUOTE 0x10002ULL +#define TDG_VP_VMCALL_REPORT_FATAL_ERROR 0x10003ULL #define TDG_VP_VMCALL_SETUP_EVENT_NOTIFY_INTERRUPT 0x10004ULL =20 #define TDG_VP_VMCALL_SUCCESS 0x0000000000000000ULL --=20 2.34.1