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=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,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 C8263C433F5 for ; Tue, 4 Sep 2018 11:45:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 750052086B for ; Tue, 4 Sep 2018 11:45:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 750052086B Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727255AbeIDQKH (ORCPT ); Tue, 4 Sep 2018 12:10:07 -0400 Received: from foss.arm.com ([217.140.101.70]:41344 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726087AbeIDQKG (ORCPT ); Tue, 4 Sep 2018 12:10:06 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 944571684; Tue, 4 Sep 2018 04:45:20 -0700 (PDT) Received: from edgewater-inn.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 66C8C3F5BC; Tue, 4 Sep 2018 04:45:20 -0700 (PDT) Received: by edgewater-inn.cambridge.arm.com (Postfix, from userid 1000) id C0F8F1AE3654; Tue, 4 Sep 2018 12:45:33 +0100 (BST) From: Will Deacon To: linux-kernel@vger.kernel.org Cc: peterz@infradead.org, npiggin@gmail.com, linux-mm@kvack.org, kirill.shutemov@linux.intel.com, akpm@linux-foundation.org, mhocko@suse.com, aneesh.kumar@linux.vnet.ibm.com Subject: [PATCH v2 5/5] MAINTAINERS: Add entry for MMU GATHER AND TLB INVALIDATION Date: Tue, 4 Sep 2018 12:45:33 +0100 Message-Id: <1536061533-16188-6-git-send-email-will.deacon@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1536061533-16188-1-git-send-email-will.deacon@arm.com> References: <1536061533-16188-1-git-send-email-will.deacon@arm.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We recently had to debug a TLB invalidation problem on the munmap() path, which was made more difficult than necessary because: (a) The MMU gather code had changed without people realising (b) Many people subtly misunderstood the operation of the MMU gather code and its interactions with RCU and arch-specific TLB invalidation (c) Untangling the intended behaviour involved educated guesswork and plenty of discussion Hopefully, we can avoid getting into this mess again by designating a cross-arch group of people to look after this code. It is not intended that they will have a separate tree, but they at least provide a point of contact for anybody working in this area and can co-ordinate any proposed future changes to the internal API. Cc: Peter Zijlstra Cc: Nicholas Piggin Cc: Linus Torvalds Cc: "Aneesh Kumar K.V" Cc: "Kirill A. Shutemov" Cc: Andrew Morton Cc: Michal Hocko Signed-off-by: Will Deacon --- MAINTAINERS | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 9ad052aeac39..e490a0a0605a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9681,6 +9681,18 @@ S: Maintained F: arch/arm/boot/dts/mmp* F: arch/arm/mach-mmp/ +MMU GATHER AND TLB INVALIDATION +M: Will Deacon +M: "Aneesh Kumar K.V" +M: Nick Piggin +M: Peter Zijlstra +L: linux-arch@vger.kernel.org +L: linux-mm@kvack.org +S: Maintained +F: arch/*/include/asm/tlb.h +F: include/asm-generic/tlb.h +F: mm/mmu_gather.c + MN88472 MEDIA DRIVER M: Antti Palosaari L: linux-media@vger.kernel.org -- 2.1.4