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=-19.0 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=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 56D4EC4332B for ; Wed, 10 Mar 2021 22:24:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 40C1764FC9 for ; Wed, 10 Mar 2021 22:24:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232626AbhCJWXh (ORCPT ); Wed, 10 Mar 2021 17:23:37 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:49049 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231935AbhCJWXI (ORCPT ); Wed, 10 Mar 2021 17:23:08 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615414988; 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=BRu817/U099Z69O52DlP7850OjT0QzngDMzivy9vMy0=; b=L9SQPsFRUyGFmxGZE/x+s5a+HkQl4dtZWLTUQwNH78SgJEsP1amhGEOvH3RfgdTa2kQIes ZjkequRwuGEq4X2dT1v3HgqwuGeomSpgRSyFL7AZmH/m04xav3e7oWF3GH9iuxDBOcA+Cn 387M7KdouN0ejxSZJYl2Uev0H44n+cc= Received: from mail-qt1-f200.google.com (mail-qt1-f200.google.com [209.85.160.200]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-9-jYcqIF8WOOessBIQIgByZQ-1; Wed, 10 Mar 2021 17:23:06 -0500 X-MC-Unique: jYcqIF8WOOessBIQIgByZQ-1 Received: by mail-qt1-f200.google.com with SMTP id k4so14060796qtd.20 for ; Wed, 10 Mar 2021 14:23:06 -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=BRu817/U099Z69O52DlP7850OjT0QzngDMzivy9vMy0=; b=UQA0RHJuYg+fkAsX6YUz3ASRN7He+qHGP+U6o8KhCVYQPcXCpFvIELnphhmBTmdcPf O4HJY7Zl//CR0JNfjf0fJcX8hBVZloL79AXJEYEFuGk+XDCAoqGXfLf65npunKIrWcCN JW/+ersBUAIPrAHFyEJRzCfnuLW/fylp6N5FUGDBAUH9gBwRRU2HX2Ys9tEkIWx00h3H ABFe+79Gp1W00cyRiBduZlCQgE3kvLbsHAA6x6lyRwtWYZSt6FRqyiw+bQqXLiW/eur6 5AEq0+bZ9qvyLjZzNOUsfBmzKiv5QkdNZrWFlcoq1JCKuROMSKfGyif9v0k/yRTgFS31 n6gQ== X-Gm-Message-State: AOAM530sV13Sy0+cVpXkmmUptikq63jD5tOGiAz9/rDSd9jTuDB11NVx 8ByNUll/JES7cJdyHNfDWO5my0gkn6mij+uzrfQ+LzNLBR6BwKV3mXSoC1RjnCdfxkL/zSsph8z sRUjfl2UGOuMaiCO+n3+FFHYGAiilCJ7aWSP6xrvZ44rg9wMQyjuFEPllqhIcM3vHNhVsDA== X-Received: by 2002:a05:620a:4152:: with SMTP id k18mr4904309qko.446.1615414986027; Wed, 10 Mar 2021 14:23:06 -0800 (PST) X-Google-Smtp-Source: ABdhPJxxuNaJloek+uHlF7/E1VLGZKWPpzK7JbQICS1D+PzN2odRmmYut602LIp0SFoC6bEVdMPnNg== X-Received: by 2002:a05:620a:4152:: with SMTP id k18mr4904283qko.446.1615414985770; Wed, 10 Mar 2021 14:23:05 -0800 (PST) Received: from xz-x1.redhat.com ([142.126.89.138]) by smtp.gmail.com with ESMTPSA id e18sm451364qtr.52.2021.03.10.14.23.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 10 Mar 2021 14:23:05 -0800 (PST) From: Peter Xu To: linux-man@vger.kernel.org Cc: Andrea Arcangeli , Michael Kerrisk , Axel Rasmussen , linux-kernel@vger.kernel.org, peterx@redhat.com, Linux MM Mailing List , Andrew Morton , Alejandro Colomar , Nadav Amit , Mike Rapoport Subject: [PATCH v3 3/4] ioctl_userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs Date: Wed, 10 Mar 2021 17:22:59 -0500 Message-Id: <20210310222300.200054-4-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210310222300.200054-1-peterx@redhat.com> References: <20210310222300.200054-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-man@vger.kernel.org UFFD_FEATURE_THREAD_ID is supported in Linux 4.14. Signed-off-by: Peter Xu --- man2/ioctl_userfaultfd.2 | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2 index 47ae5f473..d4a8375b8 100644 --- a/man2/ioctl_userfaultfd.2 +++ b/man2/ioctl_userfaultfd.2 @@ -208,6 +208,11 @@ 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. +.TP +.BR UFFD_FEATURE_THREAD_ID " (since Linux 4.14)" +If this feature bit is set, +.I uffd_msg.pagefault.feat.ptid +will be set to the faulted thread ID for each page fault message. .PP The returned .I ioctls -- 2.26.2