From patchwork Fri Nov 27 12:04:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Matthew Auld X-Patchwork-Id: 11935631 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 21CF7C63777 for ; Fri, 27 Nov 2020 12:08:58 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C1C4121D81 for ; Fri, 27 Nov 2020 12:08:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C1C4121D81 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9162B6EC26; Fri, 27 Nov 2020 12:08:21 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id 67C166EC2E; Fri, 27 Nov 2020 12:08:05 +0000 (UTC) IronPort-SDR: I/1cHq4O9MxXB7g4mIKtB8BE1/UkS5QFV9sSa4RXFGogP5WZOL2x1lJqEz6FoLPANeM+zvCNTB 7HrFK8gtp7vQ== X-IronPort-AV: E=McAfee;i="6000,8403,9817"; a="168883401" X-IronPort-AV: E=Sophos;i="5.78,374,1599548400"; d="scan'208";a="168883401" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2020 04:08:04 -0800 IronPort-SDR: 6yd9VFaN60o2mfU3CJLpe2Hw/beTC+22+o2GyCo3FP3FPiHoSPC95/TxNKAMUdj2lMe7e6ON7N Ne/UnwFy3asw== X-IronPort-AV: E=Sophos;i="5.78,374,1599548400"; d="scan'208";a="548028625" Received: from mjgleeso-mobl.ger.corp.intel.com (HELO mwauld-desk1.ger.corp.intel.com) ([10.251.85.2]) by orsmga005-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Nov 2020 04:08:03 -0800 From: Matthew Auld To: intel-gfx@lists.freedesktop.org Subject: [RFC PATCH 021/162] drm/i915: No longer allow exporting userptr through dma-buf Date: Fri, 27 Nov 2020 12:04:57 +0000 Message-Id: <20201127120718.454037-22-matthew.auld@intel.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201127120718.454037-1-matthew.auld@intel.com> References: <20201127120718.454037-1-matthew.auld@intel.com> MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel@lists.freedesktop.org, =?utf-8?q?Thomas_Hellstr=C3=B6m?= Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Maarten Lankhorst It doesn't make sense to export a memory address, we will prevent allowing access this way to different address spaces when we rework userptr handling, so best to explicitly disable it. Signed-off-by: Maarten Lankhorst Cc: Thomas Hellström --- drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c index 8c3d1eb2f96a..44af6265948d 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_userptr.c @@ -694,10 +694,9 @@ i915_gem_userptr_release(struct drm_i915_gem_object *obj) static int i915_gem_userptr_dmabuf_export(struct drm_i915_gem_object *obj) { - if (obj->userptr.mmu_object) - return 0; + drm_dbg(obj->base.dev, "Exporting userptr no longer allowed\n"); - return i915_gem_userptr_init__mmu_notifier(obj, 0); + return -EINVAL; } static int