[PATCH AUTOSEL 4.19 007/141] mm/hmm: select mmu notifier when selecting HMM

From: Sasha Levin
Date: Sat Jun 01 2019 - 09:26:06 EST


From: JÃrÃme Glisse <jglisse@xxxxxxxxxx>

[ 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@xxxxxxxxxx
Signed-off-by: JÃrÃme Glisse <jglisse@xxxxxxxxxx>
Acked-by: Balbir Singh <bsingharora@xxxxxxxxx>
Cc: Ralph Campbell <rcampbell@xxxxxxxxxx>
Cc: John Hubbard <jhubbard@xxxxxxxxxx>
Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: Ira Weiny <ira.weiny@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Cc: Souptick Joarder <jrdr.linux@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
mm/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/Kconfig b/mm/Kconfig
index de64ea658716a..b457e94ae6182 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