From nobody Mon Sep 15 11:35:00 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 A081EC678D8 for ; Thu, 12 Jan 2023 16:39:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240433AbjALQi7 (ORCPT ); Thu, 12 Jan 2023 11:38:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232299AbjALQhT (ORCPT ); Thu, 12 Jan 2023 11:37:19 -0500 Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 434CA11158; Thu, 12 Jan 2023 08:33:42 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1673541222; x=1705077222; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=bh3Wk4cssaQgw/W4O8uzTVdB/30VUThR7zsUHnJOho8=; b=A3EGDnjmqopQZ5wRr8TVK5ljrssHprGatZnsLpW/M99Es7LCQUHC1NlU EmtLhPmyS9O9h8wptd7KXlcGp2t9pxV1X9I9e67a0udQaQlhShaHvw7FM kgHeTNaqxzD9JBbLYVhjfqYpsXSpiBk1rWIf59JbvrW9Ojbfq+nfD2MCv NJJZ01hNodSTOpn8ufYb4gw8scwFZoWuEhAIKj1Zs9iEXmgsdTtfze741 mB0J6kEqbF/Bj3Rh2thAfyua5fCKIIIKNITv5TgHqY+rksTxQpJggR0U7 vyT300xfKsAkLipjkwdBA896a04vO5BJ+Jp/TpqBW13Up6PY1k4P/ja4c A==; X-IronPort-AV: E=McAfee;i="6500,9779,10588"; a="386089691" X-IronPort-AV: E=Sophos;i="5.97,211,1669104000"; d="scan'208";a="386089691" 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 08:33:35 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10588"; a="726372532" X-IronPort-AV: E=Sophos;i="5.97,211,1669104000"; d="scan'208";a="726372532" 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 08:33:35 -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 086/113] KVM: TDX: handle EXIT_REASON_OTHER_SMI Date: Thu, 12 Jan 2023 08:32:34 -0800 Message-Id: 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 47ea12f23471..83df5673d5f2 100644 --- a/arch/x86/kvm/vmx/tdx.c +++ b/arch/x86/kvm/vmx/tdx.c @@ -1119,6 +1119,13 @@ 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