linux-kernel - [PATCH 4.19 007/118] mm/hmm: select mmu notifier when selecting HMM

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Date:   Thu, 13 Jun 2019 10:32:25 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Jérôme Glisse <jglisse@...hat.com>,
        Balbir Singh <bsingharora@...il.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        John Hubbard <jhubbard@...dia.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Arnd Bergmann <arnd@...db.de>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Matthew Wilcox <willy@...radead.org>,
        Souptick Joarder <jrdr.linux@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.19 007/118] mm/hmm: select mmu notifier when selecting HMM

[ Upstream commit 734fb89968900b5c5f8edd5038bd4cdeab8c61d2 ]

To avoid random config build issue, select mmu notifier when HMM is
selected.  In any cases when HMM get selected it will be by users that
will also wants the mmu notifier.

Link: http://lkml.kernel.org/r/20190403193318.16478-2-jglisse@redhat.com
Signed-off-by: Jérôme Glisse <jglisse@...hat.com>
Acked-by: Balbir Singh <bsingharora@...il.com>
Cc: Ralph Campbell <rcampbell@...dia.com>
Cc: John Hubbard <jhubbard@...dia.com>
Cc: Dan Williams <dan.j.williams@...el.com>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Dan Carpenter <dan.carpenter@...cle.com>
Cc: Ira Weiny <ira.weiny@...el.com>
Cc: Matthew Wilcox <willy@...radead.org>
Cc: Souptick Joarder <jrdr.linux@...il.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 mm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index de64ea658716..b457e94ae618 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -700,12 +700,12 @@ config DEV_PAGEMAP_OPS
 
 config HMM
 	bool
+	select MMU_NOTIFIER
 	select MIGRATE_VMA_HELPER
 
 config HMM_MIRROR
 	bool "HMM mirror CPU page table into a device page table"
 	depends on ARCH_HAS_HMM
-	select MMU_NOTIFIER
 	select HMM
 	help
 	  Select HMM_MIRROR if you want to mirror range of the CPU page table of a
-- 
2.20.1