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=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 5BFF6C433E8 for ; Mon, 29 Mar 2021 22:19:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3F213619DC for ; Mon, 29 Mar 2021 22:19:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231778AbhC2WTJ (ORCPT ); Mon, 29 Mar 2021 18:19:09 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:37553 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231589AbhC2WSo (ORCPT ); Mon, 29 Mar 2021 18:18:44 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1617056324; 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=E2GVHJmjqb2iBlZUx1y2wNYv3goudnNwQwgOfUhB7yU=; b=WDtKoo+paj6fAV14JzL7jLEe2+tG94/AagL5WM64+trmA/Q4wSJPt6wLxOBrBmtUkzTmIx 0jCfD9vtVruGBpAc/cruLFTzTAS1qtYP9Q2ujO/lfUVtNbT6mtXAKs7NeWgagb+rqkHbep 5izkiZPIBLx7zY3nAeBCOiNvZe/f5a4= 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-161-PolSxrkSPdyfTNjszu9stQ-1; Mon, 29 Mar 2021 18:18:42 -0400 X-MC-Unique: PolSxrkSPdyfTNjszu9stQ-1 Received: by mail-qt1-f200.google.com with SMTP id u13so1963119qtv.20 for ; Mon, 29 Mar 2021 15:18:42 -0700 (PDT) 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=E2GVHJmjqb2iBlZUx1y2wNYv3goudnNwQwgOfUhB7yU=; b=JiVWZfAzdoyVND+eujV0k1XFUk/etkk0RyfLBi84s4eiVnrTFkzFUked7Xt/QSPLyq I97C7jkmOj3kj7IzhrcKxIMh29KXSEmefULCiAzpRHMiQqQUlod6H1W++qJpZV3DLzp8 RNmnU+qo6Ko0fi98fdWHtrjtiwTYryhKOTjswZSc/twrU5dY6l74nuwlbFYkB9NFF1YD u+qRy1wfplXjy9Ah4lXnwMCRCP+fKy8veN85RNYB7IbU3qGbpdhxJNhWVW2SqPgGj7Lo VqcN2LX2mS1oTvPnbjs7SbC4w9LedBZhJZ46ZPebqjRKezwZtmPVpS4vw7oJYRqF8qyl 96JQ== X-Gm-Message-State: AOAM53219IZnF8/+M7DJMNORTe8r58IDppE0kOH7/+pK9Cjyd2q/Agvt o9tiVt7eBVROzBro17bnvSgZhiQzZWVU9MzSaOwhNhGxU1/bRjxyyF/+kyC1VjiZtpaHgIC8iS5 o1jQwW3c4DYZP10Fqqj/OQQM0 X-Received: by 2002:ac8:a04:: with SMTP id b4mr24888711qti.376.1617056321686; Mon, 29 Mar 2021 15:18:41 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzgNQ6N3HPLhOf3hwMshyADiJemUjJNr4a4zc+S3pm/C0PON3OhYbkkFJRQ+v/eqjEnWMMxmw== X-Received: by 2002:ac8:a04:: with SMTP id b4mr24888695qti.376.1617056321467; Mon, 29 Mar 2021 15:18:41 -0700 (PDT) Received: from xz-x1.redhat.com (bras-base-toroon474qw-grc-82-174-91-135-175.dsl.bell.ca. [174.91.135.175]) by smtp.gmail.com with ESMTPSA id i17sm12255215qtr.33.2021.03.29.15.18.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Mar 2021 15:18:40 -0700 (PDT) From: Peter Xu To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-man@vger.kernel.org Cc: Axel Rasmussen , peterx@redhat.com, Nadav Amit , Mike Rapoport , Alejandro Colomar , Andrea Arcangeli , Michael Kerrisk , Andrew Morton Subject: [PATCH v5 3/4] ioctl_userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs Date: Mon, 29 Mar 2021 18:18:32 -0400 Message-Id: <20210329221833.517923-4-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210329221833.517923-1-peterx@redhat.com> References: <20210329221833.517923-1-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. Acked-by: Mike Rapoport 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