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 X-Spam-Level: X-Spam-Status: No, score=-10.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97D55C433E0 for ; Fri, 26 Mar 2021 23:12:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 65C1D61A32 for ; Fri, 26 Mar 2021 23:12:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230027AbhCZXL3 (ORCPT ); Fri, 26 Mar 2021 19:11:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51196 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229969AbhCZXK6 (ORCPT ); Fri, 26 Mar 2021 19:10:58 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7089BC0613AA for ; Fri, 26 Mar 2021 16:10:58 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id d8so1638388plh.11 for ; Fri, 26 Mar 2021 16:10:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel-dk.20150623.gappssmtp.com; s=20150623; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=7CxPBGNOJyGJAegkelSBZdLnkdPyLtywVW1PNxMx2sk=; b=ZDeLJwzdKyUaDa18s3wXhLOLlLqPUu1hj8zmFihTLadpy0tNlBAUz3/MndNZTcaaom zAF3qIBPA2wbWxNHHNcHNqI9ifrOWT29aSutdvsM21GjewN0MCwue4rSSctyka0RYKQC Kp9q6CKvTGuSb+FXqM1UQq5oO1eJtfDn5BTVAfeuCiWRjc8Qcfv9xbNQ4pQ7AahDRRWB F+Q+nYBceAOmNYrR8rUt9zUQoYpMCZWEHO6nG5iKhMn7zD0sOJ487T9Y4HeZLmub2qn9 Q6pP9Fyh6LvjN2mqLDuAZxwZDE+nA1PlWu/AvgVB1hpG4U1aaBZxoZbrrVSomblsXZI/ Y/6Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=7CxPBGNOJyGJAegkelSBZdLnkdPyLtywVW1PNxMx2sk=; b=JeB51FWc78whCRojKxSlIXFx6gIrHVsDNI4Pcp57sghrf/yK2dDqVSuoOhfV+LgTpO ceyGPpl1m3ZoCSzIpNjkrpHraErpcsCmwCNCZ0mrrQgd8CHAoCfts5J46YOHiqHtDda2 09eVTce3CZ+7WVMx14r6yaP5XmtQsTMpHlFf4SFybkvXbh5auvoDKDEzYYcRGQTcBbnB jTKB4UtsS/Pwv55X8d2vnQFFmF2Gq/FDQuV84TOJllFZvcAlyC3EJJKQ4mfjIoPxpYKc BEwpKNxaXiARqhHW53k8yRN/Xpj/oeqaNfAHeb7jo3VZsN6ztD3NSMiG6OFIm1rh6hbo 1sWA== X-Gm-Message-State: AOAM532IF+uKXlfunApN28dz6ya3ZL/p9sYxEXMWPKFwgpsJFr/n+129 It5pZ5dS5y7WaMrKloRfJdzoJQ== X-Google-Smtp-Source: ABdhPJyY69ZyA+1gLxCka3LrszGQwXRfBn3BuuflACv0Y3efCrQEYJLk+f64Fdyno/ctYykZkkpdOw== X-Received: by 2002:a17:90b:201:: with SMTP id fy1mr15467016pjb.108.1616800257847; Fri, 26 Mar 2021 16:10:57 -0700 (PDT) Received: from ?IPv6:2620:10d:c085:21cf::141d? ([2620:10d:c090:400::5:4d27]) by smtp.gmail.com with ESMTPSA id c193sm10174092pfc.180.2021.03.26.16.10.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 26 Mar 2021 16:10:57 -0700 (PDT) Subject: Re: [PATCH] livepatch: Replace the fake signal sending with TIF_NOTIFY_SIGNAL infrastructure To: Miroslav Benes , jpoimboe@redhat.com, jikos@kernel.org, pmladek@suse.com, joe.lawrence@redhat.com Cc: live-patching@vger.kernel.org, linux-kernel@vger.kernel.org References: <20210326143021.17773-1-mbenes@suse.cz> From: Jens Axboe Message-ID: Date: Fri, 26 Mar 2021 17:10:55 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210326143021.17773-1-mbenes@suse.cz> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: live-patching@vger.kernel.org On 3/26/21 8:30 AM, Miroslav Benes wrote: > Livepatch sends a fake signal to all remaining blocking tasks of a > running transition after a set period of time. It uses TIF_SIGPENDING > flag for the purpose. Commit 12db8b690010 ("entry: Add support for > TIF_NOTIFY_SIGNAL") added a generic infrastructure to achieve the same. > Replace our bespoke solution with the generic one. > > Signed-off-by: Miroslav Benes Looks good to me. Reviewed-by: Jens Axboe -- Jens Axboe