From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-f69.google.com (mail-oi0-f69.google.com [209.85.218.69]) by kanga.kvack.org (Postfix) with ESMTP id CE4166B6D50 for ; Tue, 4 Sep 2018 07:45:21 -0400 (EDT) Received: by mail-oi0-f69.google.com with SMTP id v4-v6so3842073oix.2 for ; Tue, 04 Sep 2018 04:45:21 -0700 (PDT) Received: from foss.arm.com (usa-sjc-mx-foss1.foss.arm.com. [217.140.101.70]) by mx.google.com with ESMTP id v2-v6si14419793oia.448.2018.09.04.04.45.20 for ; Tue, 04 Sep 2018 04:45:20 -0700 (PDT) From: Will Deacon 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> 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: owner-linux-mm@kvack.org List-ID: 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 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