From patchwork Thu Jan 25 03:23:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 13529969 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 1259DC47258 for ; Thu, 25 Jan 2024 03:34:43 +0000 (UTC) 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 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" 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 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,216,1701158400"; d="scan'208";a="2086138" 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 From: Xiaoyao Li To: Paolo Bonzini , David Hildenbrand , Igor Mammedov , "Michael S . Tsirkin" , Marcel Apfelbaum , Richard Henderson , Peter Xu , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Cornelia Huck , =?utf-8?q?Daniel_P_=2E_Berrang=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 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org 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; } +static int tdx_handle_report_fatal_error(X86CPU *cpu, + struct kvm_tdx_vmcall *vmcall) +{ + uint64_t error_code = vmcall->in_r12; + char *message = 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 = g_malloc0(GUEST_PANIC_INFO_TDX_MESSAGE_MAX + 1); + + tmp = (uint64_t *)message; + /* The order is defined in TDX GHCI spec */ + *(tmp++) = cpu_to_le64(vmcall->in_r14); + *(tmp++) = cpu_to_le64(vmcall->in_r15); + *(tmp++) = cpu_to_le64(vmcall->in_rbx); + *(tmp++) = cpu_to_le64(vmcall->in_rdi); + *(tmp++) = cpu_to_le64(vmcall->in_rsi); + *(tmp++) = cpu_to_le64(vmcall->in_r8); + *(tmp++) = cpu_to_le64(vmcall->in_r9); + *(tmp++) = cpu_to_le64(vmcall->in_rdx); + message[GUEST_PANIC_INFO_TDX_MESSAGE_MAX] = '\0'; + assert((char *)tmp == message + GUEST_PANIC_INFO_TDX_MESSAGE_MAX); + } + + 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 { #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 #define TDG_VP_VMCALL_SUCCESS 0x0000000000000000ULL