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 31616C433EF for ; Fri, 1 Apr 2022 13:59:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346610AbiDAOA6 (ORCPT ); Fri, 1 Apr 2022 10:00:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345688AbiDAOA4 (ORCPT ); Fri, 1 Apr 2022 10:00:56 -0400 Received: from mail-pj1-x1036.google.com (mail-pj1-x1036.google.com [IPv6:2607:f8b0:4864:20::1036]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99EEC4C416 for ; Fri, 1 Apr 2022 06:59:06 -0700 (PDT) Received: by mail-pj1-x1036.google.com with SMTP id bx5so2486522pjb.3 for ; Fri, 01 Apr 2022 06:59:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=vINCBhX/7V/5MbVjKTcLLNhSCyxfRcucmANL3gsUx+c=; b=kgoUwoh6UHXaBaA6YYZCcgdkNvoc15wi7vSzTTqulnHcMOVeuIFhIf/jCWzNDWRIDW Zp8miYwkjL24BUhdbwxFu7MbiqL2t+lq0iMHCS+J06BNN/nlWQ+NXba27kWz6+vpPKKN +xKDC/38TJb7+1r3HiXiuOrQMqlW/bzUF+RpJQpkCXVmnE+AkgCMZJNzF2dIENsVp1qt 51KuvPeZfuGH1CnRfNWH6blMVnA83mgMKm2BA5mvt5kr1nanrlxRCB81uvyHEl+JeFc2 LxqmtrNrjqTFqn4keU661u8EK0qc3N0JtZBYSCgczj9IBc2xDprdLRw30raFx21gvKI9 TtEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=vINCBhX/7V/5MbVjKTcLLNhSCyxfRcucmANL3gsUx+c=; b=05l96N7OlHXy2CB20+SVjb4Jlhp41XbZwV+UxYa3j+gAY1jd18WFj4/s2jHp/LZlFo +VarI/BfA1K3YOy0oRQhS6/Vb0Fx+w0W9Nc1Zpib2Bv7T1enAzRFQYiwbsJtXwZz3bqS kumj4fWGd6N51D6RdOaDd4TMAfOBBicamv2xC+cgvnqw0TxmYsngafWpuntaBGBrJlFB fcAlFwKUhuDGXp5s/zRSsIsTw79rQ+F6IgJRRA1WqabUzXj6CVqFTDPRFuyXh6JBjcgn zcvt06Tg52O2MPwSsKgjDwB2EWfah3KozgspwXJQoWtWtU76PeQU9E2JA/UVjUkJI+qd NFpA== X-Gm-Message-State: AOAM530BhmoJVl30DhdtIzPd4jWaKCXqoRts7+eg+5oVpV/PSjIbHKdp F/QTMnyxRUAKtavfV5ALwBnXbg== X-Google-Smtp-Source: ABdhPJzLqHePrkY/XZw4LtIr0qcnGq2xNXtmMhGv2XKvY6gEsdiOQBz+EHAXrwVP8F0HA3xy02hygg== X-Received: by 2002:a17:90b:4c08:b0:1c7:61ce:b707 with SMTP id na8-20020a17090b4c0800b001c761ceb707mr12061015pjb.16.1648821545937; Fri, 01 Apr 2022 06:59:05 -0700 (PDT) Received: from google.com (157.214.185.35.bc.googleusercontent.com. [35.185.214.157]) by smtp.gmail.com with ESMTPSA id s3-20020a056a00194300b004f6664d26eesm3308345pfk.88.2022.04.01.06.59.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 01 Apr 2022 06:59:05 -0700 (PDT) Date: Fri, 1 Apr 2022 13:59:01 +0000 From: Sean Christopherson To: cgel.zte@gmail.com Cc: pbonzini@redhat.com, vkuznets@redhat.com, wanpengli@tencent.com, jmattson@google.com, joro@8bytes.org, tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Lv Ruyi , Zeal Robot Subject: Re: [PATCH] KVM: x86/mmu: remove unnecessary flush_workqueue() Message-ID: References: <20220401083530.2407703-1-lv.ruyi@zte.com.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220401083530.2407703-1-lv.ruyi@zte.com.cn> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Apr 01, 2022, cgel.zte@gmail.com wrote: > From: Lv Ruyi > > All work currently pending will be done first by calling destroy_workqueue, > so there is unnecessary to flush it explicitly. > > Reported-by: Zeal Robot Good bot :-) > Signed-off-by: Lv Ruyi > --- > arch/x86/kvm/mmu/tdp_mmu.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/arch/x86/kvm/mmu/tdp_mmu.c b/arch/x86/kvm/mmu/tdp_mmu.c > index a2f9a34a0168..b822677ee3da 100644 > --- a/arch/x86/kvm/mmu/tdp_mmu.c > +++ b/arch/x86/kvm/mmu/tdp_mmu.c > @@ -51,7 +51,6 @@ void kvm_mmu_uninit_tdp_mmu(struct kvm *kvm) > if (!kvm->arch.tdp_mmu_enabled) > return; > > - flush_workqueue(kvm->arch.tdp_mmu_zap_wq); Might be worth adding a comment calling out that this drains the queue. Either way, Reviewed-by: Sean Christopherson