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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 autolearn=unavailable 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 E306FC433E0 for ; Thu, 4 Mar 2021 09:23:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A723264F11 for ; Thu, 4 Mar 2021 09:23:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237444AbhCDJXK (ORCPT ); Thu, 4 Mar 2021 04:23:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53168 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237440AbhCDJXB (ORCPT ); Thu, 4 Mar 2021 04:23:01 -0500 Received: from mail-wr1-x436.google.com (mail-wr1-x436.google.com [IPv6:2a00:1450:4864:20::436]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 29164C061761; Thu, 4 Mar 2021 01:22:21 -0800 (PST) Received: by mail-wr1-x436.google.com with SMTP id b18so20316216wrn.6; Thu, 04 Mar 2021 01:22:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=zy3rCEIJJQG4D6NTJu5yArmUIakSSBXTfjLBnVaRdVU=; b=uoTbi83DK4j9/XXsxbyDakO+8oCrZY2fOPxV4jxI297fTy3LHxVScXr/Tt2Yv9CyzO OA3MQD0hHs/YGgZxf/HUqLZFVthg7Bkes08Lg2sGCk20mDCwWezh24Wvb0wmUzjdQFpI a+FyShe50aPsvQ88oFw9ISo8ubLWJfrzZJE9KlWq7w/Zei8v6nCoG0PohrxvYl7Rl0Ai IVgii1kzmRcvg6wNAYbj5OuI1xvdnbVx5FBXP5/5ACVjWtxdoVx93fARwSwYUmXAf7Cz DpnDN2HmJQwGoNMG6Y+U9eoijUIOnvz3kJRfXwD6i8VJvQUeyqF4Is4Djkp+YOZPNChB wFxQ== 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=zy3rCEIJJQG4D6NTJu5yArmUIakSSBXTfjLBnVaRdVU=; b=uFK6VEt3QX1o7WGfrf+KPaEBJ7KJrTgSAKHumB/HsVVU4QKr1x2qp7i7Zqay9wTB9X qWASuEinv1n42VCQtdCf5DWHyIEo1T0QIOV7QwjzN3GZVJlaD6iQJaeX0E8hdpGpF64b eLwR17lK/GSlyFpfuFkbIb14f1Ru48tywgPBMjsti/PiGOeJh1ndbnYEj0IxFJGhHnVh 9ZVzwgTZvbqHZjMe24T12EgXeq2e0mkAc+sIpPOnb1vLJY0L/lmQNsidifzJ1jVbUygK zwtHiZ8BNtaOa6u2IblhWWEoBVde2cfA0NzSztJRsU/8GojTqEUyASGWQpUWQIdkfJ+Y R//Q== X-Gm-Message-State: AOAM532Um2mu6Zc9eHGX8PiwP5hF5/xNw8oN6hSezXi5VITZpwaSIDnR 1zqhpZSzAoxzxiFzl7HPq9LN+hlLWov+yg== X-Google-Smtp-Source: ABdhPJwx7gh+SFafQsixrLEy3kWyFdiEfxzd35REAZ85Mbu2PEdy34VFv94D1EL9pvWYRX2NfAa8Og== X-Received: by 2002:adf:80e7:: with SMTP id 94mr2954891wrl.5.1614849739999; Thu, 04 Mar 2021 01:22:19 -0800 (PST) Received: from [192.168.1.143] ([170.253.51.130]) by smtp.gmail.com with ESMTPSA id p10sm21724284wrw.33.2021.03.04.01.22.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 04 Mar 2021 01:22:19 -0800 (PST) Subject: Re: [PATCH 1/4] userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs To: Peter Xu Cc: Mike Rapoport , Nadav Amit , linux-kernel@vger.kernel.org, Linux MM Mailing List , Axel Rasmussen , Andrea Arcangeli , Andrew Morton , Michael Kerrisk , linux-man@vger.kernel.org References: <20210304015947.517713-1-peterx@redhat.com> <20210304015947.517713-2-peterx@redhat.com> From: "Alejandro Colomar (man-pages)" Message-ID: Date: Thu, 4 Mar 2021 10:22:18 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.0 MIME-Version: 1.0 In-Reply-To: <20210304015947.517713-2-peterx@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org Hello Peter, On 3/4/21 2:59 AM, Peter Xu wrote: > UFFD_FEATURE_THREAD_ID is supported since Linux 4.14. > > Signed-off-by: Peter Xu > --- > man2/userfaultfd.2 | 12 ++++++++++++ > 1 file changed, 12 insertions(+) > > diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2 > index e7dc9f813..2d14effc6 100644 > --- a/man2/userfaultfd.2 > +++ b/man2/userfaultfd.2 > @@ -77,6 +77,12 @@ When the last file descriptor referring to a userfaultfd object is closed, > all memory ranges that were registered with the object are unregistered > and unread events are flushed. > .\" > +.PP > +Since Linux 4.14, userfaultfd page fault message can selectively embed fault > +thread ID information into the fault message. One needs to enable this feature > +explicitly using the > +.BR UFFD_FEATURE_THREAD_ID This should use [.B] and not [.BR]. .BR is for alternate Bold and Roman. .B is for bold. (There are more appearances of this in the other patches.) Thanks, Alex -- Alejandro Colomar Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/ http://www.alejandro-colomar.es/