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 7182DC433F5 for ; Sun, 6 Feb 2022 01:49:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1381502AbiBFBtB (ORCPT ); Sat, 5 Feb 2022 20:49:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34688 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236788AbiBFBs7 (ORCPT ); Sat, 5 Feb 2022 20:48:59 -0500 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5449EC043186 for ; Sat, 5 Feb 2022 17:48:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1644112138; x=1675648138; h=date:from:to:cc:subject:message-id:mime-version; bh=5gt0BUKC470+HpXo06yNWapEGKxP7JmLvOCYrWhsVhI=; b=bcdFFYM4zChIUhgQSZ64ajyoZBGb4eCD4uTk65m4d7YSf2AoYFExjlg+ kkcNPvB4XvAJJ4mTvLxqB+Y5k3VlOB9BNL9GtVJtx1zcduZeLCPg5vmtw Ca7ChMjyhg5j17j1CxsJzp4Nx2QIAiO9Uw0sTV4tYj6k0dcicvd3AB9wP xieHhmVnKyxzq+1sUdJrQBc1rILePne/j8iPYtBN3looBGg885GISnd2H lOimMZ8NIUpPUAKuaQG2N3HS6BYfwmGsjT5dK+aC7fJ+kHzNurhTlBLkp 0HqGbNNUgTuEdN2ISkzF64lFv2nd2+7XtXZc2NmB2I6hb/OR+rYFMGQfW Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10249"; a="248309735" X-IronPort-AV: E=Sophos;i="5.88,346,1635231600"; d="scan'208";a="248309735" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Feb 2022 17:48:58 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.88,346,1635231600"; d="scan'208";a="632079350" Received: from lkp-server01.sh.intel.com (HELO 276f1b88eecb) ([10.239.97.150]) by orsmga004.jf.intel.com with ESMTP; 05 Feb 2022 17:48:56 -0800 Received: from kbuild by 276f1b88eecb with local (Exim 4.92) (envelope-from ) id 1nGWff-000ZjK-O2; Sun, 06 Feb 2022 01:48:55 +0000 Date: Sun, 6 Feb 2022 09:48:24 +0800 From: kernel test robot To: Aditya Srivastava Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Jonathan Corbet , linux-doc@vger.kernel.org Subject: arch/arm64/kvm/pmu-emul.c:453: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst Message-ID: <202202060606.bblLvJEU-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 90c9e950c0def5c354b4a6154a2ddda3e5f214ac commit: 3e58e839150db0857dfcb3a0bb3d4af4c6ac1abf scripts: kernel-doc: add warning for comment not following kernel-doc syntax date: 10 months ago config: arm64-buildonly-randconfig-r004-20220206 (https://download.01.org/0day-ci/archive/20220206/202202060606.bblLvJEU-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 11.2.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3e58e839150db0857dfcb3a0bb3d4af4c6ac1abf git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 3e58e839150db0857dfcb3a0bb3d4af4c6ac1abf # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/kvm/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): arch/arm64/kvm/pmu-emul.c:219: warning: Function parameter or member 'vcpu' not described in 'kvm_pmu_stop_counter' >> arch/arm64/kvm/pmu-emul.c:453: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * When perf interrupt is an NMI, we cannot safely notify the vcpu corresponding arch/arm64/kvm/pmu-emul.c:469: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst * When the perf event overflows, set the overflow status and inform the vcpu. vim +453 arch/arm64/kvm/pmu-emul.c b02386eb7dac75 virt/kvm/arm/pmu.c Shannon Zhao 2016-02-26 451 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 452 /** 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 @453 * When perf interrupt is an NMI, we cannot safely notify the vcpu corresponding 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 454 * to the event. 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 455 * This is why we need a callback to do it once outside of the NMI context. 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 456 */ 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 457 static void kvm_pmu_perf_overflow_notify_vcpu(struct irq_work *work) 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 458 { 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 459 struct kvm_vcpu *vcpu; 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 460 struct kvm_pmu *pmu; 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 461 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 462 pmu = container_of(work, struct kvm_pmu, overflow_work); 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 463 vcpu = kvm_pmc_to_vcpu(pmu->pmc); 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 464 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 465 kvm_vcpu_kick(vcpu); 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 466 } 95e92e45a454a1 arch/arm64/kvm/pmu-emul.c Julien Thierry 2020-09-24 467 :::::: The code at line 453 was first introduced by commit :::::: 95e92e45a454a10a8114294d0f7aec930fb85891 KVM: arm64: pmu: Make overflow handler NMI safe :::::: TO: Julien Thierry :::::: CC: Will Deacon --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org