linux-kernel - [PATCH v3 01/12] mm/hmm: select mmu notifier when selecting HMM v2

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Date:   Wed,  3 Apr 2019 15:33:07 -0400
From:   jglisse@...hat.com
To:     linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Jérôme Glisse <jglisse@...hat.com>,
        Ralph Campbell <rcampbell@...dia.com>,
        John Hubbard <jhubbard@...dia.com>,
        Dan Williams <dan.j.williams@...el.com>
Subject: [PATCH v3 01/12] mm/hmm: select mmu notifier when selecting HMM v2

From: Jérôme Glisse <jglisse@...hat.com>

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.

Changes since v1:
    - remove select MMU_NOTIFIER from HMM_MIRROR as it select HMM
      which select MMU_NOTIFIER now

Signed-off-by: Jérôme Glisse <jglisse@...hat.com>
Acked-by: Balbir Singh <bsingharora@...il.com>
Cc: Ralph Campbell <rcampbell@...dia.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: John Hubbard <jhubbard@...dia.com>
Cc: Dan Williams <dan.j.williams@...el.com>
---
 mm/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index 25c71eb8a7db..2e6d24d783f7 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -694,12 +694,12 @@ 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
-- 
2.17.2