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=-5.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 E461BC433E3 for ; Fri, 21 Aug 2020 22:34:15 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id A7A752087D for ; Fri, 21 Aug 2020 22:34:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="E5Ry6Ii/" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A7A752087D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 15F7A8D008D; Fri, 21 Aug 2020 18:34:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 10F4C8D004C; Fri, 21 Aug 2020 18:34:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F3EF08D008D; Fri, 21 Aug 2020 18:34:14 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0008.hostedemail.com [216.40.44.8]) by kanga.kvack.org (Postfix) with ESMTP id DA3DB8D004C for ; Fri, 21 Aug 2020 18:34:14 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 932413634 for ; Fri, 21 Aug 2020 22:34:14 +0000 (UTC) X-FDA: 77176030428.20.waste12_390c27f2703c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin20.hostedemail.com (Postfix) with ESMTP id 4ACD6180C07AB for ; Fri, 21 Aug 2020 22:34:14 +0000 (UTC) X-HE-Tag: waste12_390c27f2703c X-Filterd-Recvd-Size: 2447 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf50.hostedemail.com (Postfix) with ESMTP for ; Fri, 21 Aug 2020 22:34:13 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8125E20738; Fri, 21 Aug 2020 22:34:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598049253; bh=e9TgfbzPxbZ0RMettD6UjC9e/skty4Ij7sI3PWfvkKA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=E5Ry6Ii/g8IEKJsBAvTX0xghUOft+EGvmMStVB6/N9ULp3ZpMRXQs3s0ezsgFilBf N6gV871jS2Pyiysa3OKhRrRl3FJKe410XDCgbjddqnkl8k88ua0GbgLIZjHzHzHuBa 2uMzvkYf96ddYZ9ZWAXJnrXpp2IkefCJHhZD44Cs= Date: Fri, 21 Aug 2020 15:34:12 -0700 From: Andrew Morton To: Joerg Roedel Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Chris Wilson , intel-gfx@lists.freedesktop.org, Pavel Machek , Linus Torvalds , Dave Airlie , Joonas Lahtinen , Rodrigo Vivi , David Vrabel , Joerg Roedel , stable@vger.kernel.org Subject: Re: [PATCH v2] mm: Track page table modifications in __apply_to_page_range() Message-Id: <20200821153412.5902e4ed0699615d8de4a595@linux-foundation.org> In-Reply-To: <20200821123746.16904-1-joro@8bytes.org> References: <20200821123746.16904-1-joro@8bytes.org> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4ACD6180C07AB X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Fri, 21 Aug 2020 14:37:46 +0200 Joerg Roedel wrote: > The __apply_to_page_range() function is also used to change and/or > allocate page-table pages in the vmalloc area of the address space. > Make sure these changes get synchronized to other page-tables in the > system by calling arch_sync_kernel_mappings() when necessary. > > Tested-by: Chris Wilson #x86-32 > Cc: # v5.8+ I'm trying to figure out how you figured out that this is 5.8+. Has a particular misbehaving commit been identified?