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=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 B4728C4727D for ; Thu, 24 Sep 2020 13:59:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74EBE23741 for ; Thu, 24 Sep 2020 13:59:29 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="bBQO05Vw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728202AbgIXN71 (ORCPT ); Thu, 24 Sep 2020 09:59:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728153AbgIXN7T (ORCPT ); Thu, 24 Sep 2020 09:59:19 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6419EC0613D7 for ; Thu, 24 Sep 2020 06:59:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=dr6dZs3VFHA+kNUsKD0hzBTElVLKOQakCcBlV/ZNErM=; b=bBQO05VwDwAfaDqhekxajuofQQ bb+lb4i3TKVtAyCr2iKg1X8aUn1bdOY06BtcZKEUPCPJtazgELgC/vFbSI7vij62OU7cmoS4Lvp4J HeFUAy34D9c2sIi29BVo8WSJNoo9JaIHBXsP95f4sWbTsfn3hoxVg4re0K37rJI6FFIX4dKQNQ4qi wfy/IU/xQP3fhkdpdco0xb2XcZ5VH/JIoM+BRD8a3NgAFOiUbXH1CBYUN6/Wme9eQ0VGwp1cdaydU G8A1Rfo80MP8zwb3Qv4JgG75vxpJs/kFWWto8tgyBgmVyD0urYVmuY8SbsxiVEvcP/dgcqoII8P4f gsCE6STw==; Received: from p4fdb0c34.dip0.t-ipconnect.de ([79.219.12.52] helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kLRlu-0003uT-GF; Thu, 24 Sep 2020 13:58:54 +0000 From: Christoph Hellwig To: Andrew Morton Cc: Peter Zijlstra , Boris Ostrovsky , Juergen Gross , Stefano Stabellini , Jani Nikula , Joonas Lahtinen , Tvrtko Ursulin , Chris Wilson , Matthew Auld , Rodrigo Vivi , Minchan Kim , Matthew Wilcox , Nitin Gupta , x86@kernel.org, xen-devel@lists.xenproject.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org Subject: remove alloc_vm_area v2 Date: Thu, 24 Sep 2020 15:58:42 +0200 Message-Id: <20200924135853.875294-1-hch@lst.de> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrew, this series removes alloc_vm_area, which was left over from the big vmalloc interface rework. It is a rather arkane interface, basicaly the equivalent of get_vm_area + actually faulting in all PTEs in the allocated area. It was originally addeds for Xen (which isn't modular to start with), and then grew users in zsmalloc and i915 which seems to mostly qualify as abuses of the interface, especially for i915 as a random driver should not set up PTE bits directly. Note that the i915 patches apply to the drm-tip branch of the drm-tip tree, as that tree has recent conflicting commits in the same area. A git tree is also available here: git://git.infradead.org/users/hch/misc.git alloc_vm_area Gitweb: http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/alloc_vm_area Changes since v1: - fix a bug in the zsmalloc changes - fix a bug and rebase to include the recent changes in i915 - add a new vmap flag that allows to free the page array and pages using vfree - add a vfree documentation updated from Matthew Diffstat: arch/x86/xen/grant-table.c | 27 ++++-- drivers/gpu/drm/i915/Kconfig | 1 drivers/gpu/drm/i915/gem/i915_gem_pages.c | 131 +++++++++++++----------------- drivers/gpu/drm/i915/gt/shmem_utils.c | 76 ++++------------- drivers/xen/xenbus/xenbus_client.c | 30 +++--- include/linux/vmalloc.h | 7 - mm/Kconfig | 3 mm/memory.c | 16 ++- mm/nommu.c | 7 - mm/vmalloc.c | 123 ++++++++++++++-------------- mm/zsmalloc.c | 10 +- 11 files changed, 200 insertions(+), 231 deletions(-)