From patchwork Thu Sep 22 18:20:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Isaku Yamahata X-Patchwork-Id: 12985672 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 CB87EC6FA82 for ; Thu, 22 Sep 2022 18:24:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229649AbiIVSY2 (ORCPT ); Thu, 22 Sep 2022 14:24:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35060 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232650AbiIVSXm (ORCPT ); Thu, 22 Sep 2022 14:23:42 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6909010D647; Thu, 22 Sep 2022 11:22:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663870948; x=1695406948; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=W2Kk+Oh554M6hYppcd4bamgUFE8iODrNht1zMrNWv44=; b=DgMFcpt2hXTCBYItcSRRmP/nE2AN+siYptH8QwzyAMZu/6xwX6iwVwRu kySITF+P1+P5nUnSsbLnYZOp/YLLtDboItTULV2zUFZ5p7VcKzRN8VctQ izpn0W3ErqRPbRpAQZoQWiA2CCCo13Qq865NvMNnG1SPPoslrI2i/t9fc NTO7ku5WXw2XxLAZM6TSVWRyjjCG18HSuURtfpwJTGoN40fr3VzR/Flhb qoinFx6H0k5AgeCjB0lKs/ye5S96lFL0GlTf9lqeznkSPSNBmNAwvSxlM InMJb+PAB36AewAoYFNBWn/20h9MWqPdBNdRKW9uqLGhfe3hPOlY4NmcR A==; X-IronPort-AV: E=McAfee;i="6500,9779,10478"; a="326712941" X-IronPort-AV: E=Sophos;i="5.93,337,1654585200"; d="scan'208";a="326712941" Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2022 11:21:29 -0700 X-IronPort-AV: E=Sophos;i="5.93,337,1654585200"; d="scan'208";a="653086909" Received: from ls.sc.intel.com (HELO localhost) ([143.183.96.54]) by orsmga001-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2022 11:21:28 -0700 From: isaku.yamahata@intel.com To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Paolo Bonzini , Sean Christopherson , Thomas Gleixner , Marc Zyngier , Will Deacon Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com, Kai Huang , Chao Gao , Atish Patra , Shaokun Zhang , Daniel Lezcano , Huang Ying , Huacai Chen , Dave Hansen , Borislav Petkov , linuxppc-dev@lists.ozlabs.org, Fabiano Rosas Subject: [PATCH v5 27/30] RFC: KVM: powerpc: Move processor compatibility check to hardware setup Date: Thu, 22 Sep 2022 11:20:56 -0700 Message-Id: <574ca90fdaec0f37c197d9600d47d48a74f324bd.1663869838.git.isaku.yamahata@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Isaku Yamahata Move processor compatibility check from kvm_arch_processor_compat() into kvm_arch_hardware_setup(). The check does model name comparison with a global variable, cur_cpu_spec. There is no point to check it at run time on all processors. kvmppc_core_check_processor_compat() checks the global variable. There are five implementation for it as follows. arch/powerpc/include/asm/cputable.h: extern struct cpu_spec *cur_cpu_spec; arch/powerpc/kvm/book3s.c: return 0 arch/powerpc/kvm/e500.c: strcmp(cur_cpu_spec->cpu_name, "e500v2") arch/powerpc/kvm/e500mc.c: strcmp(cur_cpu_spec->cpu_name, "e500mc") strcmp(cur_cpu_spec->cpu_name, "e5500") strcmp(cur_cpu_spec->cpu_name, "e6500") Suggested-by: Sean Christopherson Signed-off-by: Isaku Yamahata Cc: linuxppc-dev@lists.ozlabs.org Cc: Fabiano Rosas Acked-by: Michael Ellerman (powerpc) --- arch/powerpc/kvm/powerpc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 7b56d6ccfdfb..31dc4f231e9d 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -444,12 +444,12 @@ int kvm_arch_hardware_enable(void) int kvm_arch_hardware_setup(void *opaque) { - return 0; + return kvmppc_core_check_processor_compat(); } int kvm_arch_check_processor_compat(void) { - return kvmppc_core_check_processor_compat(); + return 0; } int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)