linux-kernel - [PATCH 0/3] fix several TLB batch races

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Date:   Fri, 28 Jul 2017 15:41:49 +0900
From:   Minchan Kim <minchan@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     kernel-team <kernel-team@....com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Rik van Riel <riel@...hat.com>,
        Minchan Kim <minchan@...nel.org>
Subject: [PATCH 0/3] fix several TLB batch races

Nadav and Mel founded several subtle races caused by TLB batching.
This patchset aims for solving thoses problems using embedding
[set|clear]_tlb_flush_pending to TLB batching API.
With that, places to know TLB flush pending catch it up by
using mm_tlb_flush_pending.

Each patch includes detailed description.

This patchset is based on v4.13-rc2-mmots-2017-07-26-16-16 +
revert: "mm: prevent racy access to tlb_flush_pending" +
adding: "[PATCH v3 0/2] mm: fixes of tlb_flush_pending races".

Minchan Kim (3):
  mm: make tlb_flush_pending global
  mm: fix MADV_[FREE|DONTNEED] TLB flush miss problem
  mm: fix KSM data corruption

 arch/arm/include/asm/tlb.h  | 15 ++++++++++++++-
 arch/ia64/include/asm/tlb.h | 12 ++++++++++++
 arch/s390/include/asm/tlb.h | 15 +++++++++++++++
 arch/sh/include/asm/tlb.h   |  4 +++-
 arch/um/include/asm/tlb.h   |  8 ++++++++
 fs/proc/task_mmu.c          |  4 +++-
 include/linux/mm_types.h    | 22 +++++-----------------
 kernel/fork.c               |  2 --
 mm/debug.c                  |  2 --
 mm/ksm.c                    |  3 ++-
 mm/memory.c                 | 24 ++++++++++++------------
 11 files changed, 74 insertions(+), 37 deletions(-)

-- 
2.7.4