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 BA4B5C433E0 for ; Wed, 10 Mar 2021 00:46:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8C61665139 for ; Wed, 10 Mar 2021 00:46:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231390AbhCJApe (ORCPT ); Tue, 9 Mar 2021 19:45:34 -0500 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:20251 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231304AbhCJApR (ORCPT ); Tue, 9 Mar 2021 19:45:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615337116; 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=DIKqEnVKGNcLQtEUyRYn0WMFjt909MFugpYoUyiruog=; b=AzVXRauGDEJwtWevQI7aOe90moXpVLkynfmh7nAUVsrvDg5rSZBm8jLk/z6YApxXL/Xdwh NO0SHlFvjeOPSuncWb8yLGKPVJ4O/D+pSF70GNfPNwljTIoyhiCJGLOT31C1gHnJePTOt2 JKI0zApptdpfDZKoh0hIdc2tuG/+kwM= Received: from mail-qv1-f71.google.com (mail-qv1-f71.google.com [209.85.219.71]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-378-FONuWheNOjm3kRmFUGseKw-1; Tue, 09 Mar 2021 19:45:14 -0500 X-MC-Unique: FONuWheNOjm3kRmFUGseKw-1 Received: by mail-qv1-f71.google.com with SMTP id u17so11516917qvq.23 for ; Tue, 09 Mar 2021 16:45:14 -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=DIKqEnVKGNcLQtEUyRYn0WMFjt909MFugpYoUyiruog=; b=lFyqWbFJe9jbVJq2tOmznIFmxtd/bsMnfaQjg9N7B1+xc33STDam9SpNfUbbCxi3pe 4makTGdYwgK8mdJxj94se3kkbWD9zV6rNdHrJe+M9st4bHpJI8Sq1P+fsyGHTdtXpREY 8sYyev1rO4DkN6UFTvLZCcvZIM0sFJcSJhRBcpBKGAzq+aFiq3YniWgz9+X0ZI0bGWo2 XuAhymFEfUDMgkAuCxXVE5sXwMOt2Z9G0FL/quIZtghE6ZooThhKvGo2hBwlYz32am9x KDkjSAG/0e36hD+KJs6rNYJ5VDu7xP7Fp+2Hpa5IEiOKAt3AT8n5K55fQiZxQYksvLJ2 K+0Q== X-Gm-Message-State: AOAM530DBGmPoIsmSWEiBPEgKvlmjmcd4M3AMDM+UUc+k2KFxOV68YBZ P4XGWqM30fK77BrvqjCXTiJNHeTvC3WGi9ee0/2gxjT643YY8q+K0lk14lVfm9aAN/Ewp5wlgEB 5Qrg/eXGCB/78eZSCLzaADr+Y X-Received: by 2002:a05:620a:142b:: with SMTP id k11mr403974qkj.46.1615337114380; Tue, 09 Mar 2021 16:45:14 -0800 (PST) X-Google-Smtp-Source: ABdhPJxTC9hbLM/m7Kg8/pWXWJFOEAIOs735VU1B7Iv6yPZNnqF1n9Z/Dvdr7fwVIgy27JbpOXBgqg== X-Received: by 2002:a05:620a:142b:: with SMTP id k11mr403956qkj.46.1615337114167; Tue, 09 Mar 2021 16:45:14 -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 b27sm11418173qkl.102.2021.03.09.16.45.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Mar 2021 16:45:13 -0800 (PST) From: Peter Xu To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Axel Rasmussen , Andrew Morton , peterx@redhat.com, Andrea Arcangeli , Nadav Amit Subject: [PATCH 1/5] userfaultfd/selftests: Use user mode only Date: Tue, 9 Mar 2021 19:45:07 -0500 Message-Id: <20210310004511.51996-2-peterx@redhat.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210310004511.51996-1-peterx@redhat.com> References: <20210310004511.51996-1-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). 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 f31e9a4edc55..6dab8ef034a0 100644 --- a/tools/testing/selftests/vm/userfaultfd.c +++ b/tools/testing/selftests/vm/userfaultfd.c @@ -381,7 +381,7 @@ static int userfaultfd_open(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