From nobody Mon Sep 15 11:35:35 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4ECB9C63797 for ; Thu, 12 Jan 2023 16:40:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240601AbjALQkv (ORCPT ); Thu, 12 Jan 2023 11:40:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42562 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234748AbjALQh1 (ORCPT ); Thu, 12 Jan 2023 11:37:27 -0500 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A9FC12771; Thu, 12 Jan 2023 08:33:47 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673541227; x=1705077227; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hmZOmmDPZfznqubXfeRRdJI9Kyf8KoOoN+Zdo+unsC0=; b=Dlj+Ua9ooBJ96NVJXGlMIPXxdfNyEZqGHQJMc4CFB7gBuXI5gy2pKe5C VdZuXq/XDJlmHsFcxiK424bDYDI7OyCMs9vx0jpSbYM71HI17ZE84tCuJ 1NsaTqlJ0BfOhmwDEkSnii/qKDlCjwJ/4c3ZG6SgcVl/Oqj2IDyLap/wn UuGRc1eIabK8dH/LwPeb245BW0BQ2nJ8ndcvIQoBE7JKFnS5Upbuof8ED sn3RNI1lhgQNfHlSaBZ/EqsoxUaDpnd2iokDPoC9Zpr/83bJO10vkArSt ZA4fUj3a4k9lXe3EUkTJ4yw47g5FqLJknHZpAzXeuZArA6cNsmZIBOreM g==; X-IronPort-AV: E=McAfee;i="6500,9779,10588"; a="386089757" X-IronPort-AV: E=Sophos;i="5.97,211,1669104000"; d="scan'208";a="386089757" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jan 2023 08:33:37 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10588"; a="726372582" X-IronPort-AV: E=Sophos;i="5.97,211,1669104000"; d="scan'208";a="726372582" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Jan 2023 08:33:37 -0800 From: isaku.yamahata@intel.com To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Paolo Bonzini , erdemaktas@google.com, Sean Christopherson , Sagi Shahar , David Matlack Subject: [PATCH v11 098/113] KVM: TDX: Handle TDX PV report fatal error hypercall Date: Thu, 12 Jan 2023 08:32:46 -0800 Message-Id: <1b4b247e8a374e1b8c2d7c2bee948f8e50a9ea5b.1673539699.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Isaku Yamahata Wire up TDX PV report fatal error hypercall to exit to device model so that it can gracefully handle it. Signed-off-by: Isaku Yamahata --- arch/x86/kvm/vmx/tdx.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index 5dc7dae55c57..4bbde58510a4 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -1199,6 +1199,13 @@ static int handle_tdvmcall(struct kvm_vcpu *vcpu) return tdx_emulate_rdmsr(vcpu); case EXIT_REASON_MSR_WRITE: return tdx_emulate_wrmsr(vcpu); + case TDG_VP_VMCALL_REPORT_FATAL_ERROR: + /* + * Exit to userspace device model for tear down. + * Because guest TD is already panicking, returning an error to + * guest TD doesn't make sense. No argument check is done. + */ + return tdx_vp_vmcall_to_user(vcpu); default: break; } --=20 2.25.1