From nobody Sat Apr 11 21:16:57 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 E8E3BC19F2A for ; Sun, 7 Aug 2022 22:09:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242173AbiHGWJo (ORCPT ); Sun, 7 Aug 2022 18:09:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50494 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237216AbiHGWF2 (ORCPT ); Sun, 7 Aug 2022 18:05:28 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1098AB845; Sun, 7 Aug 2022 15:03:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1659909786; x=1691445786; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=IRBrGdKRfquiGF7sDCfmGSS240++oz142fl2JeTijGI=; b=nBSV31RX//j3NvnT4egYXfLovLwitcZ7jtu+7kanpBsnn6faSCNdBFcX 7x1mdccLgv3qVwcRYq90pC1CJXSwxN1TftW4d86+kuwrXmiuGXx8hPV1H AQsqgVMNTEL7YXKUDQT6dwGMDv/6wcttKOP/xCm1EOpl+jS8PAV5klN3r zKTjX33qcEdYnTbmjnylOC0Shw4OXlTaKAs8Ity4h1H8azGN8Jw36NHWO pFbKZRddTJb14Y5LWfD/hCnwBLZqrLNv28MRZmGSXSCif46k57xHdGOmI yuRB2GlpJIazFJwbCLabudZrmQT6h2u3/GmvqEWATwLWDm5DQajFJMZYQ A==; X-IronPort-AV: E=McAfee;i="6400,9594,10432"; a="270240391" X-IronPort-AV: E=Sophos;i="5.93,220,1654585200"; d="scan'208";a="270240391" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2022 15:02:42 -0700 X-IronPort-AV: E=Sophos;i="5.93,220,1654585200"; d="scan'208";a="663682725" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Aug 2022 15:02:42 -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 Subject: [PATCH v8 085/103] KVM: TDX: handle EXIT_REASON_OTHER_SMI Date: Sun, 7 Aug 2022 15:02:10 -0700 Message-Id: <18c868394d02c3676a440fc70e2fa4b2c4855b83.1659854791.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 fc0895f1fe75..53dce2b601dc 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -1206,6 +1206,13 @@ 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