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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS 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 7FAE6C433DF for ; Fri, 21 Aug 2020 18:52:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 50F7220748 for ; Fri, 21 Aug 2020 18:52:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 50F7220748 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id ED1568D006C; Fri, 21 Aug 2020 14:52:13 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E7EFD8D0002; Fri, 21 Aug 2020 14:52:13 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D6F668D006C; Fri, 21 Aug 2020 14:52:13 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0130.hostedemail.com [216.40.44.130]) by kanga.kvack.org (Postfix) with ESMTP id 3B1838D0002 for ; Fri, 21 Aug 2020 14:52:13 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 028BB824556B for ; Fri, 21 Aug 2020 18:52:13 +0000 (UTC) X-FDA: 77175470946.21.sofa52_3a16ce02703b Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin21.hostedemail.com (Postfix) with ESMTP id CFEF218044739 for ; Fri, 21 Aug 2020 18:52:12 +0000 (UTC) X-HE-Tag: sofa52_3a16ce02703b X-Filterd-Recvd-Size: 2066 Received: from fireflyinternet.com (unknown [77.68.26.236]) by imf05.hostedemail.com (Postfix) with ESMTP for ; Fri, 21 Aug 2020 18:52:12 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from localhost (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP (TLS) id 22202611-1500050 for multiple; Fri, 21 Aug 2020 19:51:44 +0100 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable In-Reply-To: <20200821123746.16904-1-joro@8bytes.org> References: <20200821123746.16904-1-joro@8bytes.org> Subject: Re: [PATCH v2] mm: Track page table modifications in __apply_to_page_range() From: Chris Wilson Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, Pavel Machek , Linus Torvalds , Dave Airlie , Joonas Lahtinen , Rodrigo Vivi , David Vrabel , Joerg Roedel , stable@vger.kernel.org To: Andrew Morton , Joerg Roedel Date: Fri, 21 Aug 2020 19:51:42 +0100 Message-ID: <159803590250.29194.13619627284206815276@build.alporthouse.com> User-Agent: alot/0.9 X-Rspamd-Queue-Id: CFEF218044739 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: Quoting Joerg Roedel (2020-08-21 13:37:46) > From: Joerg Roedel >=20 > 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. >=20 > Tested-by: Chris Wilson #x86-32 > Cc: # v5.8+ > Signed-off-by: Joerg Roedel I've doubled check that this patch by itself fixes our x86-32 vmapping issue. Thanks, -Chris