From nobody Mon Feb 9 03:46:34 2026 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 91231C001DF for ; Tue, 25 Jul 2023 22:24:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232693AbjGYWY3 (ORCPT ); Tue, 25 Jul 2023 18:24:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232555AbjGYWWU (ORCPT ); Tue, 25 Jul 2023 18:22:20 -0400 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3AAF74C3F; Tue, 25 Jul 2023 15:17:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1690323466; x=1721859466; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=WcaDgfkogRdzhJ1xqHvkpBoLwuvf368y385r/77EQew=; b=HV/mvXgFtYiGXq2ZUaE5JVKv+q+07RyT26xO7kn8oitB5/A0XROPlWO+ h4DJEdpUV5SGi2f5uo3Up871EjVII00CGnkpVXUuvIEco9WQTZw3Cw/cG fUdhZMzQ2kEmizDOmge7rat/bwfIdii53yhGgKw2zEVaKWu/cevq7U7a1 36L3F2DwIMHcy7+mTeJ629WxyjuaxzDR3mPXbkVQEUy/b870XJEDRMjwe opIa4YZF7LfnSi6SVlgqE6hXx403CUQuFI9obhGAJwtqfOFvz8D0vavR0 5n6vySLaFnqIdx9Ishvreo0NXOPGQ4GnXuSgk1uyEW1xabWXntNPWwwQn w==; X-IronPort-AV: E=McAfee;i="6600,9927,10782"; a="367882665" X-IronPort-AV: E=Sophos;i="6.01,231,1684825200"; d="scan'208";a="367882665" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2023 15:16:00 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10782"; a="840001872" X-IronPort-AV: E=Sophos;i="6.01,231,1684825200"; d="scan'208";a="840001872" Received: from ls.sc.intel.com (HELO localhost) ([172.25.112.31]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jul 2023 15:15:59 -0700 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 , Kai Huang , Zhi Wang , chen.bo@intel.com, hang.yuan@intel.com, tina.zhang@intel.com Subject: [PATCH v15 085/115] KVM: TDX: handle EXIT_REASON_OTHER_SMI Date: Tue, 25 Jul 2023 15:14:36 -0700 Message-Id: <68d4f34501980bb0d352e97a339571684b222a2f.1690322424.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 If the control reaches EXIT_REASON_OTHER_SMI, #SMI is delivered and handled right after returning from the TDX module to KVM nothing needs to be done in KVM. Continue TDX vcpu execution. Signed-off-by: Isaku Yamahata Reviewed-by: Paolo Bonzini --- arch/x86/include/uapi/asm/vmx.h | 1 + arch/x86/kvm/vmx/tdx.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/arch/x86/include/uapi/asm/vmx.h b/arch/x86/include/uapi/asm/vm= x.h index a5faf6d88f1b..b3a30ef3efdd 100644 --- a/arch/x86/include/uapi/asm/vmx.h +++ b/arch/x86/include/uapi/asm/vmx.h @@ -34,6 +34,7 @@ #define EXIT_REASON_TRIPLE_FAULT 2 #define EXIT_REASON_INIT_SIGNAL 3 #define EXIT_REASON_SIPI_SIGNAL 4 +#define EXIT_REASON_OTHER_SMI 6 =20 #define EXIT_REASON_INTERRUPT_WINDOW 7 #define EXIT_REASON_NMI_WINDOW 8 diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c index 0dfd6ea07aa0..0d92253ea40e 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -1196,6 +1196,13 @@ int tdx_handle_exit(struct kvm_vcpu *vcpu, fastpath_= t fastpath) WARN_ON_ONCE(fastpath !=3D EXIT_FASTPATH_NONE); =20 switch (exit_reason.basic) { + case EXIT_REASON_OTHER_SMI: + /* + * If reach here, it's not a Machine Check System Management + * Interrupt(MSMI). #SMI is delivered and handled right after + * SEAMRET, nothing needs to be done in KVM. + */ + return 1; default: break; } --=20 2.25.1