queue-4.14/mm-hmm-select-mmu-notifier-when-selecting-hmm.patch

   1 From c0d9e0bfe88c10f2d08d670d05e0919320df5133 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= <jglisse@redhat.com>
   3 Date: Mon, 13 May 2019 17:19:45 -0700
   4 Subject: mm/hmm: select mmu notifier when selecting HMM
   5 MIME-Version: 1.0
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   8
   9 [ Upstream commit 734fb89968900b5c5f8edd5038bd4cdeab8c61d2 ]
  10
  11 To avoid random config build issue, select mmu notifier when HMM is
  12 selected.  In any cases when HMM get selected it will be by users that
  13 will also wants the mmu notifier.
  14
  15 Link: http://lkml.kernel.org/r/20190403193318.16478-2-jglisse@redhat.com
  16 Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
  17 Acked-by: Balbir Singh <bsingharora@gmail.com>
  18 Cc: Ralph Campbell <rcampbell@nvidia.com>
  19 Cc: John Hubbard <jhubbard@nvidia.com>
  20 Cc: Dan Williams <dan.j.williams@intel.com>
  21 Cc: Arnd Bergmann <arnd@arndb.de>
  22 Cc: Dan Carpenter <dan.carpenter@oracle.com>
  23 Cc: Ira Weiny <ira.weiny@intel.com>
  24 Cc: Matthew Wilcox <willy@infradead.org>
  25 Cc: Souptick Joarder <jrdr.linux@gmail.com>
  26 Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
  27 Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
  28 Signed-off-by: Sasha Levin <sashal@kernel.org>
  29 ---
  30  mm/Kconfig | 2 +-
  31  1 file changed, 1 insertion(+), 1 deletion(-)
  32
  33 diff --git a/mm/Kconfig b/mm/Kconfig
  34 index 59efbd3337e0..cc4d633947bf 100644
  35 --- a/mm/Kconfig
  36 +++ b/mm/Kconfig
  37 @@ -708,12 +708,12 @@ config MIGRATE_VMA_HELPER
  38
  39  config HMM
  40         bool
  41 +       select MMU_NOTIFIER
  42         select MIGRATE_VMA_HELPER
  43
  44  config HMM_MIRROR
  45         bool "HMM mirror CPU page table into a device page table"
  46         depends on ARCH_HAS_HMM
  47 -       select MMU_NOTIFIER
  48         select HMM
  49         help
  50           Select HMM_MIRROR if you want to mirror range of the CPU page table of a
  51 --
  52 2.20.1
  53