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| author | Christoph Hellwig <hch@lst.de> | 2019-08-06 19:05:52 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-08-07 14:58:06 -0300 |
| commit | 9c240a7bb33787d4fed56508425ae0b2936b1674 (patch) | |
| tree | df15ec6d19cab336c92176b6aaccf478c1722133 /mm | |
| parent | f442c283efe4bda53c8e52b230159d020ea11c8e (diff) | |
| download | linux-9c240a7bb33787d4fed56508425ae0b2936b1674.tar.gz linux-9c240a7bb33787d4fed56508425ae0b2936b1674.tar.bz2 linux-9c240a7bb33787d4fed56508425ae0b2936b1674.zip | |
mm/hmm: make HMM_MIRROR an implicit option
Make HMM_MIRROR an option that is selected by drivers wanting to use it
instead of a user visible option as it is just a low-level implementation
detail.
Link: https://lore.kernel.org/r/20190806160554.14046-15-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/Kconfig | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/mm/Kconfig b/mm/Kconfig index b18782be969c..563436dc1f24 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -675,16 +675,14 @@ config MIGRATE_VMA_HELPER config DEV_PAGEMAP_OPS bool +# +# Helpers to mirror range of the CPU page tables of a process into device page +# tables. +# config HMM_MIRROR - bool "HMM mirror CPU page table into a device page table" + bool depends on MMU - select MMU_NOTIFIER - help - Select HMM_MIRROR if you want to mirror range of the CPU page table of a - process into a device page table. Here, mirror means "keep synchronized". - Prerequisites: the device must provide the ability to write-protect its - page tables (at PAGE_SIZE granularity), and must be able to recover from - the resulting potential page faults. + depends on MMU_NOTIFIER config DEVICE_PRIVATE bool "Unaddressable device memory (GPU memory, ...)" |