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.
Signed-off-by: Christoph Hellwig <h...@lst.de>
---
drivers/gpu/drm/amd/amdgpu/Kconfig | 4 +++-
drivers/gpu/drm/nouveau/Kconfig | 4 +++-
mm/Kconfig | 14 ++++++--------
3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/Kconfig
b/drivers/gpu/drm/amd/amdgpu/Kconfig
index f6e5c0282fc1..2e98c016cb47 100644
--- a/drivers/gpu/drm/amd/amdgpu/Kconfig
+++ b/drivers/gpu/drm/amd/amdgpu/Kconfig
@@ -27,7 +27,9 @@ config DRM_AMDGPU_CIK
config DRM_AMDGPU_USERPTR
bool "Always enable userptr write support"
depends on DRM_AMDGPU
- depends on HMM_MIRROR
+ depends on MMU
+ select HMM_MIRROR
+ select MMU_NOTIFIER
help
This option selects CONFIG_HMM and CONFIG_HMM_MIRROR if it
isn't already selected to enabled full userptr support.
diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 96b9814e6d06..df4352c279ba 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -86,9 +86,11 @@ config DRM_NOUVEAU_SVM
bool "(EXPERIMENTAL) Enable SVM (Shared Virtual Memory) support"
depends on DEVICE_PRIVATE
depends on DRM_NOUVEAU
- depends on HMM_MIRROR
+ depends on MMU
depends on STAGING
+ select HMM_MIRROR
select MIGRATE_VMA_HELPER
+ select MMU_NOTIFIER
default n
help
Say Y here if you want to enable experimental support for
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, ...)"
--
2.20.1
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