From patchwork Mon Jul 15 04:49:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhao Liu X-Patchwork-Id: 13732878 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 97780C3DA45 for ; Mon, 15 Jul 2024 04:36:31 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sTDQI-00015X-KM; Mon, 15 Jul 2024 00:34:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTDQC-0000qX-Fo for qemu-devel@nongnu.org; Mon, 15 Jul 2024 00:34:45 -0400 Received: from mgamail.intel.com ([198.175.65.10]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sTDQA-0004GK-Tz for qemu-devel@nongnu.org; Mon, 15 Jul 2024 00:34:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721018084; x=1752554084; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zkaR53NTxYfZ7vr3XibkLp9FDRnY38s2Fxjaq5MK80o=; b=OlKHLkO0sDfYT+4aWHaHvxUSHqlTU8x9Dh9dG6LlJ6cXgKihFaUPupKQ X4rlVMxx7Qhdw/vo3H9of0d85PYoJwF1EPtUe8Shzq9U7nuRKHZ3BaVJy mBIAf/0mhXYskWQd2rVwc6g6EP6lr1n72ZUsot9lyeULGbPGM842B4ht5 EB2TNIvMHf0rt6Y2xw5j/nqB7Gx9t4H9tjVm2Ki0pPYEU2xUhnGmKmcC8 3hNJvCsjASTTHisvNQ25bSxwgtFD72+Mu5CdqFs751aJcbsVU+E6g/uWS gLOBv3XjzZUoS6Hl5hAskAmXDJLFvHCfLmbaGHnQ4uMxAmKneQLhRb80y w==; X-CSE-ConnectionGUID: vYJGBbowQ/WYGEd45DJVow== X-CSE-MsgGUID: 4q2YJVxnQSC1y+EE65ut+A== X-IronPort-AV: E=McAfee;i="6700,10204,11133"; a="35809869" X-IronPort-AV: E=Sophos;i="6.09,209,1716274800"; d="scan'208";a="35809869" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 14 Jul 2024 21:34:43 -0700 X-CSE-ConnectionGUID: k7iJzDdDTD2Rgyq/0IMfyw== X-CSE-MsgGUID: 1K2khsfRRb6jkzlWCBsdZg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,209,1716274800"; d="scan'208";a="54043151" Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by fmviesa004.fm.intel.com with ESMTP; 14 Jul 2024 21:34:39 -0700 From: Zhao Liu To: Paolo Bonzini , Richard Henderson , Eduardo Habkost , "Michael S . Tsirkin" , Marcel Apfelbaum , Marcelo Tosatti Cc: Xiaoyao Li , Pankaj Gupta , Zide Chen , qemu-devel@nongnu.org, kvm@vger.kernel.org, Zhao Liu Subject: [PATCH v3 8/8] target/i386/kvm: Clean up error handling in kvm_arch_init() Date: Mon, 15 Jul 2024 12:49:55 +0800 Message-Id: <20240715044955.3954304-9-zhao1.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240715044955.3954304-1-zhao1.liu@intel.com> References: <20240715044955.3954304-1-zhao1.liu@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=198.175.65.10; envelope-from=zhao1.liu@intel.com; helo=mgamail.intel.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Currently, there're following incorrect error handling cases in kvm_arch_init(): * Missed to handle failure of kvm_get_supported_feature_msrs(). * Missed to return when KVM_CAP_X86_DISABLE_EXITS enabling fails. * MSR filter related cases called exit() directly instead of returning to kvm_init(). Fix the above cases. Signed-off-by: Zhao Liu --- target/i386/kvm/kvm.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 0fd1d099ae4c..246fe12ae411 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -2682,7 +2682,10 @@ int kvm_arch_init(MachineState *ms, KVMState *s) return ret; } - kvm_get_supported_feature_msrs(s); + ret = kvm_get_supported_feature_msrs(s); + if (ret < 0) { + return ret; + } uname(&utsname); lm_capable_kernel = strcmp(utsname.machine, "x86_64") == 0; @@ -2740,6 +2743,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) if (ret < 0) { error_report("kvm: guest stopping CPU not supported: %s", strerror(-ret)); + return ret; } } @@ -2785,7 +2789,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) if (ret) { error_report("Could not enable user space MSRs: %s", strerror(-ret)); - exit(1); + return ret; } ret = kvm_filter_msr(s, MSR_CORE_THREAD_COUNT, @@ -2793,7 +2797,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) if (ret) { error_report("Could not install MSR_CORE_THREAD_COUNT handler: %s", strerror(-ret)); - exit(1); + return ret; } }