From patchwork Thu Apr 25 03:12:26 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhao Liu X-Patchwork-Id: 13642809 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 27B6BC4345F for ; Thu, 25 Apr 2024 02:59:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rzpK2-0006jy-7M; Wed, 24 Apr 2024 22:58:54 -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 1rzpJw-0006jG-V5; Wed, 24 Apr 2024 22:58:49 -0400 Received: from mgamail.intel.com ([198.175.65.21]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rzpJt-00055o-Pm; Wed, 24 Apr 2024 22:58:48 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714013926; x=1745549926; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=UzWS39yvXKazwXHx6xonklzmLlk2yJapDzB+gzVW8+M=; b=Pl+Z+/MUrOccy8fms21/DOhx4gL+AwEtcAK/cwst26slv/rOScasT+Fx AS7gZ8qzDO2XOMpKEJlgqbKGfmjcOHl9fovjZ7Zub/RltJ8uBr39KfL6O dQCHNfnLzGLT9A5QF6Mn6XqLU1IYYpFZGRN1+3QQacWBStv79ZelFiuTp 2+6VqjkJ+CiygVaFgZUazpXQZcs/pe3PtFPeQxUTRc77Vmqh2yDHzNkwy GbQI7BAs2IJNyAFxrw8tiZ5WldxUNr0l6y9FNjsI/h8mhmLC45RZ9KF6N 9FbOCFRltoHBFiMN5ZwHQTxm7KWasxjvEsiq/hyug7IaIcQfM/1OBUtat w==; X-CSE-ConnectionGUID: WoD+nZARR2mvdMHrUnf7ZA== X-CSE-MsgGUID: VEfG/y5cTCegrXi0Mv4mSg== X-IronPort-AV: E=McAfee;i="6600,9927,11054"; a="9605640" X-IronPort-AV: E=Sophos;i="6.07,228,1708416000"; d="scan'208";a="9605640" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by orvoesa113.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 24 Apr 2024 19:58:44 -0700 X-CSE-ConnectionGUID: DtCxYZWmQw+kAYNsZ+vd9Q== X-CSE-MsgGUID: jyoXAQWLRderQF3JIjyKtg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,228,1708416000"; d="scan'208";a="62395656" Received: from liuzhao-optiplex-7080.sh.intel.com ([10.239.160.36]) by orviesa001.jf.intel.com with ESMTP; 24 Apr 2024 19:58:41 -0700 From: Zhao Liu To: Thomas Huth , David Hildenbrand , Richard Henderson , Ilya Leoshkevich , Halil Pasic , Christian Borntraeger , =?utf-8?q?Philippe_Mathi?= =?utf-8?q?eu-Daud=C3=A9?= Cc: qemu-s390x@nongnu.org, qemu-devel@nongnu.org, Zhao Liu Subject: [PATCH v2 1/7] target/s390x/cpu_model: Make check_compatibility() return boolean Date: Thu, 25 Apr 2024 11:12:26 +0800 Message-Id: <20240425031232.1586401-2-zhao1.liu@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240425031232.1586401-1-zhao1.liu@intel.com> References: <20240425031232.1586401-1-zhao1.liu@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=198.175.65.21; envelope-from=zhao1.liu@intel.com; helo=mgamail.intel.com X-Spam_score_int: -50 X-Spam_score: -5.1 X-Spam_bar: ----- X-Spam_report: (-5.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.668, 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 As error.h suggested, the best practice for callee is to return something to indicate success / failure. With returned boolean, there's no need to check @err. Suggested-by: Thomas Huth Signed-off-by: Zhao Liu Reviewed-by: Thomas Huth --- target/s390x/cpu_models.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c index 8ed3bb6a27b3..8cb47d905fb4 100644 --- a/target/s390x/cpu_models.c +++ b/target/s390x/cpu_models.c @@ -510,7 +510,7 @@ static void check_compat_model_failed(Error **errp, return; } -static void check_compatibility(const S390CPUModel *max_model, +static bool check_compatibility(const S390CPUModel *max_model, const S390CPUModel *model, Error **errp) { ERRP_GUARD(); @@ -518,11 +518,11 @@ static void check_compatibility(const S390CPUModel *max_model, if (model->def->gen > max_model->def->gen) { check_compat_model_failed(errp, max_model, "Selected CPU generation is too new"); - return; + return false; } else if (model->def->gen == max_model->def->gen && model->def->ec_ga > max_model->def->ec_ga) { check_compat_model_failed(errp, max_model, "Selected CPU GA level is too new"); - return; + return false; } #ifndef CONFIG_USER_ONLY @@ -530,14 +530,14 @@ static void check_compatibility(const S390CPUModel *max_model, error_setg(errp, "The unpack facility is not compatible with " "the --only-migratable option. You must remove either " "the 'unpack' facility or the --only-migratable option"); - return; + return false; } #endif /* detect the missing features to properly report them */ bitmap_andnot(missing, model->features, max_model->features, S390_FEAT_MAX); if (bitmap_empty(missing, S390_FEAT_MAX)) { - return; + return true; } error_setg(errp, " "); @@ -546,6 +546,7 @@ static void check_compatibility(const S390CPUModel *max_model, "available in the current configuration: "); error_append_hint(errp, "Consider a different accelerator, QEMU, or kernel version\n"); + return false; } S390CPUModel *get_max_cpu_model(Error **errp) @@ -605,8 +606,7 @@ void s390_realize_cpu_model(CPUState *cs, Error **errp) cpu->model->cpu_ver = max_model->cpu_ver; check_consistency(cpu->model); - check_compatibility(max_model, cpu->model, &err); - if (err) { + if (!check_compatibility(max_model, cpu->model, &err)) { error_propagate(errp, err); return; }