Message ID | 1536061533-16188-6-git-send-email-will.deacon@arm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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[217.140.101.70]) by mx.google.com with ESMTP id v2-v6si14419793oia.448.2018.09.04.04.45.20 for <linux-mm@kvack.org>; Tue, 04 Sep 2018 04:45:20 -0700 (PDT) Received-SPF: pass (google.com: domain of will.deacon@arm.com designates 217.140.101.70 as permitted sender) client-ip=217.140.101.70; Authentication-Results: mx.google.com; spf=pass (google.com: domain of will.deacon@arm.com designates 217.140.101.70 as permitted sender) smtp.mailfrom=will.deacon@arm.com 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 <will.deacon@arm.com> 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> 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: <linux-mm.kvack.org> X-Virus-Scanned: ClamAV using ClamSMTP |
Series |
Extend and consolidate mmu_gather into new file
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expand
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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 <will.deacon@arm.com> +M: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> +M: Nick Piggin <npiggin@gmail.com> +M: Peter Zijlstra <peterz@infradead.org> +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 <crope@iki.fi> L: linux-media@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 <peterz@infradead.org> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Michal Hocko <mhocko@suse.com> Signed-off-by: Will Deacon <will.deacon@arm.com> --- MAINTAINERS | 12 ++++++++++++ 1 file changed, 12 insertions(+)