From mboxrd@z Thu Jan 1 00:00:00 1970 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 AE6A0C43334 for ; Mon, 27 Jun 2022 22:01:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242170AbiF0WBP (ORCPT ); Mon, 27 Jun 2022 18:01:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241570AbiF0Vzr (ORCPT ); Mon, 27 Jun 2022 17:55:47 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C11C713DFB; Mon, 27 Jun 2022 14:55:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1656366906; x=1687902906; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=8BrPNw5ZeAWOOfIQSyGr7Gu6ZgI+pfpvXp44VqIh+yU=; b=hZwKv9cVOsw/Ly1G7e+KhD88ab+2r/mOgk5jYSqz9fbft32EqogalpWO y66bXHxSS2A76NJ/xN5sdarbdePWv9aErQNENPB7Qk5OOTV8Eee2gIsdy IYIhO3xqF2ATs2UEgITEzbZXR4nnFjcXQVt2thdMFLfZHo1YFyb2QVHsx ii7bTE41GS1/IVhite94B0zIWpGCEyQexOFnNbtvuUT2NBbBPp2hIy1Ij RhFr0SsxIkjiZm48F9qV4dgSa2tw9sn7wo1iItzvw3tvEjbECDGltekRH Dt0qaHQ3JtdJfK3FIoRnqKcGzsmkR3AEgwMJByFraX8NdZWEhFf+9zyyB w==; X-IronPort-AV: E=McAfee;i="6400,9594,10391"; a="279116131" X-IronPort-AV: E=Sophos;i="5.92,227,1650956400"; d="scan'208";a="279116131" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Jun 2022 14:55:00 -0700 X-IronPort-AV: E=Sophos;i="5.92,227,1650956400"; d="scan'208";a="657863711" 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; 27 Jun 2022 14:55:00 -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 Subject: [PATCH v7 084/102] KVM: TDX: handle EXIT_REASON_OTHER_SMI Date: Mon, 27 Jun 2022 14:54:16 -0700 Message-Id: X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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/vmx.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 #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 c29501a69167..e5268bfa8d27 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 != EXIT_FASTPATH_NONE); 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; } -- 2.25.1