From nobody Mon Feb 9 04:33:17 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 964A2C4167D for ; Thu, 5 May 2022 18:21:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1384334AbiEESYR (ORCPT ); Thu, 5 May 2022 14:24:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36826 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1383317AbiEESTp (ORCPT ); Thu, 5 May 2022 14:19:45 -0400 Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A49B85DBD5; Thu, 5 May 2022 11:16:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1651774561; x=1683310561; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=SOHEj5Fn64+hYv6cZsOEgx/aKfn1VDBjHKB7akkORwQ=; b=FVUpTXIlGR/+Z2llGt5AfbQjR/lhclUO/hVkE/em9m+DgXIPCgm880Mc I+e/3OLCnbdDrwFPfW0jCPL0ANfH8mUiDLCEQHww7Zk9Q6dfj5TllCzhi gUSUEaYqGNL4xUarrLioophlxy16tl024xQ+z9LVAlrjfOABaThvBm+Vf tUZCfM6TUcmOZi132NQXTlxkT3/Y4Z4nzWGHmrZ8YywMJ9D3CYvGkpjQO a9m35NCwjkI/MIed3Gl6EjvHHtIfPSgYe9Nu1Iy/CqxX5yux0ZK9scbSB ZEsk0b7CdXJ1l3PpRmMIloM3taNLIGZvIiWY0DWiKpp2L+vLFUzrB8f6L w==; X-IronPort-AV: E=McAfee;i="6400,9594,10338"; a="248113932" X-IronPort-AV: E=Sophos;i="5.91,202,1647327600"; d="scan'208";a="248113932" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2022 11:15:53 -0700 X-IronPort-AV: E=Sophos;i="5.91,202,1647327600"; d="scan'208";a="665083448" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by fmsmga002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2022 11:15:53 -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: [RFC PATCH v6 085/104] KVM: TDX: handle EXIT_REASON_OTHER_SMI Date: Thu, 5 May 2022 11:15:19 -0700 Message-Id: <59e90973b777eb6992e41e3d8a949e8a99711bce.1651774250.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 946d761adbd3..3d9b4598e166 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 b3fc9d95fffd..1f31dead31f2 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -1209,6 +1209,13 @@ 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