Received: by 2002:a25:23cc:0:0:0:0:0 with SMTP id j195csp1760741ybj; Wed, 6 May 2020 04:58:22 -0700 (PDT) X-Google-Smtp-Source: APiQypKcAgjkg8a5Ve6yXhHdGyN+5TdZumJO7Ty13heX5A8lV1AotxTeOtQUA2T5dOsp1o5fFVbX X-Received: by 2002:a50:a685:: with SMTP id e5mr6096152edc.243.1588766302633; Wed, 06 May 2020 04:58:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1588766302; cv=none; d=google.com; s=arc-20160816; b=fgKMay3Xo6pR4mPahfZiqD1lR+He+87WHqNSTHU1qjVLIFvG5IBiMNhfxQiUgebIyU icWEDofAQk0VnKNmTY7ylZld5jIOyn58NTAc5MJG85+/x7fMz2Cy5ptjwn7zcj/gOqj5 OJSEldwITKTie/P3YrKq78AcDASKyPJAiEn67RTQ9ERAtJTlUXQybb1wtBos5LKrjjPx HJApU5GW8aWDiVSYnBgpP3mBpCT4Xter/pJ6ou9jWbcdgMcRNpw4CNGzrdvBWEOrlDNR FaSeqwmGKoG4toJgrEQhFmCcvqux+d+/qnkTzfZGWFyEGxG400BXJHitEOTiU/XNh0fj lPLg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:mime-version:user-agent:references :message-id:in-reply-to:subject:cc:to:from:date; bh=m4I1pGKqyvigZSVNCJFkMMw1kMi2/6Zo4apLpcMzH28=; b=Jg78z6+bq4JYPMjZQ1NoyoZxheP1lJ3Yoeoq5koPupnPOjnurpo/UEZ8kpHnOdT/Uj sGYpMYK145UdhhRMw2vbqzNeBaQVNdTg2iifvRJEhN8gcSyE/VSw+d09wTzGjHsjkrOB oSulNyRHAdqeuHS1ks8YIR5cDypqKjsonVZ86qR64Fi2rP3/ewkbF9WFrXFo1BcMiobV sv3DlPJHDSng5ertQp7RJA/5ofls3fDiGA3T8mALatZJZtAPyMquNgmJG4wTnjwgWGRH cpGyG3e3c8Dw5cV7nuMTP2eVZWeSLNt5R1eISq1ghcwe2/dPCL0uUlu7Kis+2nB+EEoV y1Lw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id f4si1023258ejd.83.2020.05.06.04.57.59; Wed, 06 May 2020 04:58:22 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727802AbgEFLxj (ORCPT + 99 others); Wed, 6 May 2020 07:53:39 -0400 Received: from mx2.suse.de ([195.135.220.15]:35260 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726778AbgEFLxi (ORCPT ); Wed, 6 May 2020 07:53:38 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id EF8DBAD2C; Wed, 6 May 2020 11:53:39 +0000 (UTC) Date: Wed, 6 May 2020 13:53:36 +0200 (CEST) From: Miroslav Benes To: Thomas Gleixner cc: LKML , x86@kernel.org, "Paul E. McKenney" , Andy Lutomirski , Alexandre Chartre , Frederic Weisbecker , Paolo Bonzini , Sean Christopherson , Masami Hiramatsu , Petr Mladek , Steven Rostedt , Joel Fernandes , Boris Ostrovsky , Juergen Gross , Brian Gerst , Mathieu Desnoyers , Josh Poimboeuf , Will Deacon , "Peter Zijlstra (Intel)" Subject: Re: [patch V4 part 1 05/36] x86/entry: Flip _TIF_SIGPENDING and _TIF_NOTIFY_RESUME handling In-Reply-To: <20200505134058.560059744@linutronix.de> Message-ID: References: <20200505131602.633487962@linutronix.de> <20200505134058.560059744@linutronix.de> User-Agent: Alpine 2.21 (LSU 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 5 May 2020, Thomas Gleixner wrote: > Make sure task_work runs before any kind of userspace -- very much > including signals -- is invoked. I might be missing something, but isn't this guaranteed by do_signal()->get_signal()->task_work_run() path? Miroslav