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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 0AA3EC43381 for ; Thu, 4 Mar 2021 02:02:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D822D65056 for ; Thu, 4 Mar 2021 02:02:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232970AbhCDCCA (ORCPT ); Wed, 3 Mar 2021 21:02:00 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:24824 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232818AbhCDCBW (ORCPT ); Wed, 3 Mar 2021 21:01:22 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614823196; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=67CmUKUe+TmQG3UkcCcwTlXVexG5QMLko4/9hpCBQsc=; b=XsW4PYFDwC67Bk9Mi3ugW2TUb8mbe1MXabEjASqHn8x6ODXTcExz/o4HPbURzcgwfmPJWc oP/bhNJKKJbHvt3uOF7mm3uixYGlLd6ZH2WpmRoHZMRXNDeycWTcD/o0W0asnV2+L54iRZ ussL/iN7mmsEGEsgRWKbiMTkuGKFaks= Received: from mail-qt1-f198.google.com (mail-qt1-f198.google.com [209.85.160.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-114-7sj3XE10Mp2EzkZPvfZ1pg-1; Wed, 03 Mar 2021 20:59:55 -0500 X-MC-Unique: 7sj3XE10Mp2EzkZPvfZ1pg-1 Received: by mail-qt1-f198.google.com with SMTP id b21so9557148qtr.8 for ; Wed, 03 Mar 2021 17:59:55 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=67CmUKUe+TmQG3UkcCcwTlXVexG5QMLko4/9hpCBQsc=; b=hd2R6bG1Y/12nw2LVPLDR0UVnzsVXITS4/px/+8OiVeDxwEDCuuyU7MlC9PGBug9mz oVK6gS9navKsiC/xRVUecA8UCknqdUca8RQ50sStk4eGL0R6Yi9vMRbRQLvEUv2dhnXQ HThMCyqVVSxHLiQqevMzSY3S/Vr4L7fNi01ad648zdyWJNP42mGJw/9Va/6xBdrcQ65T Ouj9GGPOq/MQpd0SMScwBoQyYL20ovEfcctAbPg16pVczrbLB5r0OaESzoXaRa6uur2X aIdPLPkzN3+9eRo6cidbF3uDqW7gT22hIp+pHQxuHXtvyCIFSUXEcSPq4qZLSJ0k6z4p TX5Q== X-Gm-Message-State: AOAM530f45LkoZEtUiyGz/SMYbBRQGHXKJ4nyNs2CGRqrd4Ox3dOdM23 oI9kzXjEgofXuJZp9ZTFhpw41DM8qMSwfO7RED9VkaqNuwnvkTW1sxBdzIbglkrQVSv9Nr62h1/ Ehw7RgDgs4Vf7DH2kiJhEPJWh X-Received: by 2002:a05:620a:887:: with SMTP id b7mr1915872qka.215.1614823194811; Wed, 03 Mar 2021 17:59:54 -0800 (PST) X-Google-Smtp-Source: ABdhPJxo2VGf7bBuTU7j/MVXQgMA7Qwe9+C87OoGoXi+q2ohdE1GsIQSeuTM/aQKjlxmq66uapauvw== X-Received: by 2002:a05:620a:887:: with SMTP id b7mr1915861qka.215.1614823194633; Wed, 03 Mar 2021 17:59:54 -0800 (PST) Received: from xz-x1.redhat.com (bras-vprn-toroon474qw-lp130-25-174-95-95-253.dsl.bell.ca. [174.95.95.253]) by smtp.gmail.com with ESMTPSA id b7sm18610766qkj.115.2021.03.03.17.59.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Mar 2021 17:59:54 -0800 (PST) From: Peter Xu To: linux-man@vger.kernel.org Cc: Mike Rapoport , Nadav Amit , linux-kernel@vger.kernel.org, Linux MM Mailing List , peterx@redhat.com, Axel Rasmussen , Alejandro Colomar , Andrea Arcangeli , Andrew Morton , Michael Kerrisk Subject: [PATCH 3/4] ioctl_userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs Date: Wed, 3 Mar 2021 20:59:46 -0500 Message-Id: <20210304015947.517713-4-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210304015947.517713-1-peterx@redhat.com> References: <20210304015947.517713-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org UFFD_FEATURE_THREAD_ID is supported in Linux 4.14. Signed-off-by: Peter Xu --- man2/ioctl_userfaultfd.2 | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2 index 47ae5f473..1965d1932 100644 --- a/man2/ioctl_userfaultfd.2 +++ b/man2/ioctl_userfaultfd.2 @@ -208,6 +208,10 @@ signal will be sent to the faulting process. Applications using this feature will not require the use of a userfaultfd monitor for processing memory accesses to the regions registered with userfaultfd. +.BR UFFD_FEATURE_THREAD_ID " (since Linux 4.14)" +If this feature bit is set, +.I uffd_msg.pagefault.feat.ptid +Will be set .PP The returned .I ioctls -- 2.26.2