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=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 97C76C433ED for ; Mon, 12 Apr 2021 23:28:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6BF6B61220 for ; Mon, 12 Apr 2021 23:28:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344124AbhDLX2S (ORCPT ); Mon, 12 Apr 2021 19:28:18 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:41691 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237531AbhDLX2R (ORCPT ); Mon, 12 Apr 2021 19:28:17 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618270078; 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=8RGMu5U4C672ZFkUHV1HUutAzRw00/5hGpU2qjqaw+g=; b=ik+iRlrxh7hPPnvos0zGnriJrBvCGHLz7LS/hXsW0VlqT/44lnwqPkVLIZdMhvqyIY2vL7 P45Cac3nxhfzzu9w8Nz6nesUDiil+uokWPMrYKM5/Fky4ZkMuM03emRjKSpCzapKpeYDa9 2YhK6x7SSgx0bgyRYSwClvu97yLoqFE= Received: from mail-qv1-f69.google.com (mail-qv1-f69.google.com [209.85.219.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-471-bZTjzXCXPzukV_petnkBmQ-1; Mon, 12 Apr 2021 19:27:57 -0400 X-MC-Unique: bZTjzXCXPzukV_petnkBmQ-1 Received: by mail-qv1-f69.google.com with SMTP id p2so8977670qvi.6 for ; Mon, 12 Apr 2021 16:27:57 -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=8RGMu5U4C672ZFkUHV1HUutAzRw00/5hGpU2qjqaw+g=; b=TvJ7f+Ev7WvYoyG8TYXn4I1/9WkIM2IYCIeGOrrAkt5VMXfrVj1cHe+GVS5ODtScW6 2uk+zI30TUgynOHeNSjYgJ8Fwf+GcVYaiVMLQfB3q3G9Ak+JkZUKSj+HcS9Y/tBW6nPe 8eoNJytq9fIcCnsDw/MUS7WfdwsMCIAS+bYIbMXgweMfqfGjtGFxE4uQ9ZlIwZFMkfYp wyUZ2/cx9xNHVxrQujXjcgGWIpwOtk+DeZXAL/8gdAQJ9T7JP6/wJHcXz54IKjlZnDO0 iCg0H0Tz40xLhqOi5EM0lmvHR6PWjULZ5oSNclpUzUMzbXDSkDx2zR6LfM+OA7k4ZkvL 3N+A== X-Gm-Message-State: AOAM5337JYuBwu5OfKCpbjzSiXS5DpP4LB2V3HUGv1Mw+QMQ2MwrV9Gz 3Fo0B5vt6r1x4w5f0TZcsysfxBC6a2gp/N6Q0JugZmDwb/ZY8KitjSR7eDXl5VHXe4BwzsXBZ3F ODSJXlYbP7jOoDTC87QOJkVGK X-Received: by 2002:ac8:6d09:: with SMTP id o9mr3892032qtt.382.1618270076826; Mon, 12 Apr 2021 16:27:56 -0700 (PDT) X-Google-Smtp-Source: ABdhPJxn5W/tQj+R3pMmXzP0Ur8Z8NUkCG0N6aVa54TjdIDXDmk9C1P06JrNCv3t9AkIZY1b6K3Tow== X-Received: by 2002:ac8:6d09:: with SMTP id o9mr3892019qtt.382.1618270076645; Mon, 12 Apr 2021 16:27:56 -0700 (PDT) Received: from xz-x1.redhat.com (bras-base-toroon474qw-grc-88-174-93-75-154.dsl.bell.ca. [174.93.75.154]) by smtp.gmail.com with ESMTPSA id y29sm8958925qtm.13.2021.04.12.16.27.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Apr 2021 16:27:56 -0700 (PDT) From: Peter Xu To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrea Arcangeli , peterx@redhat.com, Andrew Morton , Mike Rapoport , Axel Rasmussen Subject: [PATCH v2 1/5] userfaultfd/selftests: Use user mode only Date: Mon, 12 Apr 2021 19:27:49 -0400 Message-Id: <20210412232753.1012412-2-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210412232753.1012412-1-peterx@redhat.com> References: <20210412232753.1012412-1-peterx@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Userfaultfd selftest does not need to handle kernel initiated fault. Set user mode so it can be run even if unprivileged_userfaultfd=0 (which is the default). Reviewed-by: Axel Rasmussen Signed-off-by: Peter Xu --- tools/testing/selftests/vm/userfaultfd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c index f5ab5e0312e7..ce23db8eec26 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -831,7 +831,7 @@ static int userfaultfd_open_ext(uint64_t *features) { struct uffdio_api uffdio_api; - uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK); + uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK | UFFD_USER_MODE_ONLY); if (uffd < 0) { fprintf(stderr, "userfaultfd syscall not available in this kernel\n"); -- 2.26.2