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=-16.5 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,T_DKIMWL_WL_MED,USER_AGENT_GIT,USER_IN_DEF_DKIM_WL 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 E6BCEC04A6B for ; Mon, 6 May 2019 16:32:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B957B205C9 for ; Mon, 6 May 2019 16:32:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="ZSFHbQPv" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727298AbfEFQcf (ORCPT ); Mon, 6 May 2019 12:32:35 -0400 Received: from mail-ot1-f73.google.com ([209.85.210.73]:37044 "EHLO mail-ot1-f73.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727203AbfEFQbo (ORCPT ); Mon, 6 May 2019 12:31:44 -0400 Received: by mail-ot1-f73.google.com with SMTP id i21so7764782otf.4 for ; Mon, 06 May 2019 09:31:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=eYbhxmTmdaiTVlq2aRmj2n9QkL6CX4/S4opJ9oDHFhE=; b=ZSFHbQPvMQhkrf29+rXmES4x80rxWQfO3CRg3EirSkEvMHaN6TChbsHuGqG8tqYPqI EOCA65HA1vwG2VBAq4EN+A4OM16jXXWhM8t5gUCVAGxaFpj7A96cWjckSSXVB9ifgUBP JPRXtbLz3WvjXz6TEKimgkTZH4CSKnvPcLkcG+UwjiKkw5OJqJ0dywa/iWl3MUEMoYLx yX/R0TAlH28V7Dy/lDpZ2CQKiEy+5rLrSQMyM1Z1SBWcw4VX+lOfzjflOLQGIDoNcKIy Lw+nu7cdx5CVE6SIyoKDCFcQFHBzYbom0atBI7FulTuqD2oMzEvZRTJLiB0pdkfBeBX2 irnA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=eYbhxmTmdaiTVlq2aRmj2n9QkL6CX4/S4opJ9oDHFhE=; b=Qo9KrmhYN7mG4NnwsrfDLam+mx2vez/NzGC+4tlB7RNhCv0IJFqdVdmM757QCO0Uhm fEzbfLGtrqscThV49HjXBny/J3RGr+dNQkPoOvHVdn6iiaOhXT/7IYEagVKiJFtE/9rk oRGUIll/YMeqVLnJtkxRZVouoGTjfbH5pU4AXz9cHLYlYzVUDEI8s9d15OERgHdZdlsE /+0vNQaugDuAOARIHdJtqBoOPf7dUv0k9B3eYK5FkrIUPtcatWvyVKli0k6lpEfkUiq6 VXLtRYiy4Q1J08QdhaWZml+FrYhnQBtzTp4aKzRNjAeTtJu+PmCE3J42nLM4Col3bfAS 3rmg== X-Gm-Message-State: APjAAAWYSLN09ofJI7FSq8zgjkldurY1grNANlA9DVdxHSoYy1yLfYnq Sn3Vh6HN5FyJ5EhWCHwAsK5osb+fExwqA53y X-Google-Smtp-Source: APXvYqzdzQlfaHkw0Qwo4QQtxGeWhxSSS13Ps1SOtj6ReWwWjESZwRkhi/LnnldOgTKgizVRLfncWXFiUgbgbiQx X-Received: by 2002:a9d:7d04:: with SMTP id v4mr16958653otn.185.1557160304159; Mon, 06 May 2019 09:31:44 -0700 (PDT) Date: Mon, 6 May 2019 18:30:58 +0200 In-Reply-To: Message-Id: <03fe9d923db75cf72678f3ce103838e67390751a.1557160186.git.andreyknvl@google.com> Mime-Version: 1.0 References: X-Mailer: git-send-email 2.21.0.1020.gf2820cf01a-goog Subject: [PATCH v15 12/17] drm/radeon, arm64: untag user pointers in radeon_gem_userptr_ioctl From: Andrey Konovalov To: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, kvm@vger.kernel.org, linux-kselftest@vger.kernel.org Cc: Catalin Marinas , Vincenzo Frascino , Will Deacon , Mark Rutland , Andrew Morton , Greg Kroah-Hartman , Kees Cook , Yishai Hadas , Felix Kuehling , Alexander Deucher , Christian Koenig , Mauro Carvalho Chehab , Jens Wiklander , Alex Williamson , Leon Romanovsky , Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Robin Murphy , Luc Van Oostenryck , Dave Martin , Kevin Brodsky , Szabolcs Nagy , Andrey Konovalov Content-Type: text/plain; charset="UTF-8" Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This patch is a part of a series that extends arm64 kernel ABI to allow to pass tagged user pointers (with the top byte set to something else other than 0x00) as syscall arguments. In radeon_gem_userptr_ioctl() an MMU notifier is set up with a (tagged) userspace pointer. The untagged address should be used so that MMU notifiers for the untagged address get correctly matched up with the right BO. This funcation also calls radeon_ttm_tt_pin_userptr(), which uses provided user pointers for vma lookups, which can only by done with untagged pointers. This patch untags user pointers in radeon_gem_userptr_ioctl(). Signed-off-by: Andrey Konovalov --- drivers/gpu/drm/radeon/radeon_gem.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c index 44617dec8183..90eb78fb5eb2 100644 --- a/drivers/gpu/drm/radeon/radeon_gem.c +++ b/drivers/gpu/drm/radeon/radeon_gem.c @@ -291,6 +291,8 @@ int radeon_gem_userptr_ioctl(struct drm_device *dev, void *data, uint32_t handle; int r; + args->addr = untagged_addr(args->addr); + if (offset_in_page(args->addr | args->size)) return -EINVAL; -- 2.21.0.1020.gf2820cf01a-goog