[PATCH 25/25] mm: don't select MIGRATE_VMA_HELPER from HMM_MIRROR

Christoph Hellwig
2019-06-17T12:28:36Z

The migrate_vma helper is only used by noveau to migrate device private
pages around. Other HMM_MIRROR users like amdgpu or infiniband don't
need it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
---
drivers/gpu/drm/nouveau/Kconfig | 1 +
mm/Kconfig | 1 -
2 files changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/Kconfig b/drivers/gpu/drm/nouveau/Kconfig
index 66c839d8e9d1..96b9814e6d06 100644
--- a/drivers/gpu/drm/nouveau/Kconfig
+++ b/drivers/gpu/drm/nouveau/Kconfig
@@ -88,6 +88,7 @@ config DRM_NOUVEAU_SVM
depends on DRM_NOUVEAU
depends on HMM_MIRROR
depends on STAGING
+ select MIGRATE_VMA_HELPER
default n
help
Say Y here if you want to enable experimental support for
diff --git a/mm/Kconfig b/mm/Kconfig
index 7fa785551f96..55c9c661e2ee 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -680,7 +680,6 @@ config HMM_MIRROR
depends on (X86_64 || PPC64)
depends on MMU && 64BIT
select MMU_NOTIFIER
- select MIGRATE_VMA_HELPER
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".