Received: by 2002:a05:6a10:9afc:0:0:0:0 with SMTP id t28csp463909pxm; Fri, 25 Feb 2022 11:30:45 -0800 (PST) X-Google-Smtp-Source: ABdhPJx0h+58N1W4h+O/wajomRI2rvNDSGBSuBYx8TWwAHi00UOuSolP7oB+IQIVDC/ypdU69pwb X-Received: by 2002:a17:90a:7889:b0:1bc:7786:2aac with SMTP id x9-20020a17090a788900b001bc77862aacmr4670986pjk.47.1645817445338; Fri, 25 Feb 2022 11:30:45 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1645817445; cv=none; d=google.com; s=arc-20160816; b=VivIvrEteTqBGLyvsqqb2joN+WU+qq8Yq6tBHM7myqzapXHY3/sfTBj6wW9e9P4uWd lYcVfsbvJdwfk5tt59+Nx/9E9qvnR1u0QPrtR6A3R2Lv7WcKkRKwqKjne5Dk0QcGjeo+ mzuN8Jz8++LqTOzloLGMkGYxMnDMcy7vM4GwbqQqtK9IMyqnP4UhDJl6fGQj1DNUNHHJ 7Yu6v+0jm4ZjKdi3PWbU9SNvweLKUFypUQ7QZPEM8SQOmHcDnQRTdT/nOh0icuH9Byar aXfBdjt9N5Bb/M21F5yew1Ojot+tNJKr7uxQgTU/OeKpjn8ynxl5qPspcNTWAMUh/KmW u0wg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:user-agent:references:in-reply-to :subject:cc:to:from:message-id:date:dkim-signature; bh=HGv58H0yALNMf50NaDpJabZeOVjLu1gVaEa7NPqE1kw=; b=S5DCGFJV1ez1t9GGZkbckT30w8094J3aSyvT5PDwxuDdsVqHHdvV47B6evWDY0DuAx j616j9IIOzUnSib+sg2bD9xrhrcV9eyZAGLU9ZtPMyvrpeF02AR1gNzQOszBXBBg/e6i rVTxPjD+ZH7lV/Za0Bcz7EMkH/UidKfvf0f03PxbIMwsQFMRoDoCTG1FYVSsB9+pJdqw Gm3hTtHu0RFDqxbj/5G6esA+R+V5FB+6h/AkQKJY1EbBvXigFoUHkVr3VnWmqOJqU7E6 zfIm5YslyRNpiR/L2bwUNDg6eE3OSzVCy2dm3RZt5/4GOjS1yyDwCSV3tnlZ43ihf+EJ bLcQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=fVAKE6aS; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id x11-20020a056a00188b00b004f0e8c5ae9esi2700511pfh.28.2022.02.25.11.30.29; Fri, 25 Feb 2022 11:30:45 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=fVAKE6aS; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242124AbiBYPcU (ORCPT + 99 others); Fri, 25 Feb 2022 10:32:20 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233758AbiBYPcT (ORCPT ); Fri, 25 Feb 2022 10:32:19 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2965B218CEA for ; Fri, 25 Feb 2022 07:31:47 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id BA81B61851 for ; Fri, 25 Feb 2022 15:31:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 21370C340E7; Fri, 25 Feb 2022 15:31:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1645803106; bh=OJP6GJj98Sjx4FzgK763MteoSg9awmetSsvPt3dPPiM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=fVAKE6aS8+cJYj2hySBtQB2qZ8cLka3qwUkqw3LxzyKxsmSxUuDIZAuQ7NAFKzWFO UGjCcDO9+rWnS6gMvyx74BZrR/HuZ1lahD1rSC5tQbF6CEWdqigh9mIwF3vMtn39W5 nzQ1H0Kgq3PhwEsaxeIgF6J46kTleltGmAlu61xOFifFRUMoTiUY8l+5JFsOAdhBMU S/GlpIWQJdQaGsIYkzGM242nG7XTZGFBEofpnUeHz2sLqSQ2ZPrFf2lsOf0ba7ua+F QcUNvTI3WogFDF2OYsRwRAF4xXVPv0QQ/IsMO+wWo0GrdMJvSHB1EsYqgVeaidn3f2 OzCspGiVEQm3w== Received: from sofa.misterjones.org ([185.219.108.64] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1nNcZL-00AYvf-Ro; Fri, 25 Feb 2022 15:31:43 +0000 Date: Fri, 25 Feb 2022 15:31:43 +0000 Message-ID: <87k0dj2c9s.wl-maz@kernel.org> From: Marc Zyngier To: "Chen, Rong A" Cc: Ard Biesheuvel , Kalesh Singh , kernel test robot , llvm@lists.linux.dev, kbuild-all@lists.01.org, Will Deacon , Quentin Perret , Fuad Tabba , surenb@google.com, Android Kernel Team , Catalin Marinas , James Morse , Alexandru Elisei , Suzuki K Poulose , Mark Rutland , Pasha Tatashin , Joey Gouly , Peter Collingbourne , Andrew Scull , Paolo Bonzini , Zenghui Yu , Linux ARM , Linux Kernel Mailing List , kvmarm Subject: Re: [kbuild-all] Re: [PATCH v2 6/9] KVM: arm64: Detect and handle hypervisor stack overflows In-Reply-To: <16f47fa9-90b4-0b5c-33cb-cb004fc39266@intel.com> References: <20220222165212.2005066-7-kaleshsingh@google.com> <202202231727.L621fVgD-lkp@intel.com> <875yp63ptg.wl-maz@kernel.org> <89c48bd2a9b32b4607d1515714fa3c1b@kernel.org> <16f47fa9-90b4-0b5c-33cb-cb004fc39266@intel.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: rong.a.chen@intel.com, ardb@kernel.org, kaleshsingh@google.com, lkp@intel.com, llvm@lists.linux.dev, kbuild-all@lists.01.org, will@kernel.org, qperret@google.com, tabba@google.com, surenb@google.com, kernel-team@android.com, catalin.marinas@arm.com, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, mark.rutland@arm.com, pasha.tatashin@soleen.com, joey.gouly@arm.com, pcc@google.com, ascull@google.com, pbonzini@redhat.com, yuzenghui@huawei.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-Spam-Status: No, score=-7.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 25 Feb 2022 02:12:32 +0000, "Chen, Rong A" wrote: > > Hi Marc, Ard, > > We have ignored the warning related to asmlinkage according to the > below advice: > > https://lore.kernel.org/lkml/CAMj1kXHrRYagSVniSetHdG15rkQS+fm4zVOtN=Zda3W0QaEoJA@mail.gmail.com/ Ah, I didn't realise it had been updated. Apologies for the shouting! > do you want the bot ignore such warning if asmlinkage not specified? No, there is some value in warning about this particular case. Thanks, M. -- Without deviation from the norm, progress is not possible.