From 7526aa54b261087014bdea7e361f900d4741c35e Mon Sep 17 00:00:00 2001 From: Will Deacon Date: Mon, 3 Sep 2018 15:19:37 +0100 Subject: [PATCH] MAINTAINERS: Add entry for MMU GATHER AND TLB INVALIDATION 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 | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 9ad052aeac39..225c3af1cccd 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9681,6 +9681,19 @@ 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: Andrew Morton +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