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=-12.0 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 2A9EFC47431 for ; Wed, 30 Sep 2020 17:52:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E3320207F7 for ; Wed, 30 Sep 2020 17:52:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="S0V1ilHw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731583AbgI3RwO (ORCPT ); Wed, 30 Sep 2020 13:52:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731483AbgI3Rv7 (ORCPT ); Wed, 30 Sep 2020 13:51:59 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B03A1C0613D0 for ; Wed, 30 Sep 2020 10:51:58 -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=07YiCh12zxNb+LfRUHOuc0cOw1/oVX+fVA/5cFMfxTE=; b=S0V1ilHwkGgbbTo2M350wdoI3C 7lLk66poahAwcksIO1u1LSSIxtPdZ4ajUF7mmZOuiAy4VKWO2BOkh4jmJEgoz+vYl+pxKKmn1L62/ cR5OxZR0ZcX8CtFM/89ZjqDZ90kkZgAZeV5ujQjb8OMvbUfBgu6ZTJ+NIRxRgtKUnqSF7fUiBFUNQ fR4r0qk8dSD+qYuIsfTRM+UXKnS/TE4Da87IJGDT47CsLpsTEzDQLDabopXoZRINzBGFNcHo0bZYh hOkxAjzXXVDPEnTyi8auHmOSpSvIRbGjcSC4yKDNp4s2Ir9GCQHS7afLyB8VzQkH75/ca3S3ZtESd mLLKt94A==; Received: from [2001:4bb8:180:7b62:c70:4a89:bc61:4] (helo=localhost) by casper.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1kNgGM-0001Ax-Rh; Wed, 30 Sep 2020 17:51:35 +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 v3 Date: Wed, 30 Sep 2020 19:51:23 +0200 Message-Id: <20200930175133.1252382-1-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. 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 v2: - add another missing i initialization - rebased to mainline instead of drm-tip again 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(-)