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drm/amdgpu: use HMM callback to replace mmu notifier

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Replace our MMU notifier with hmm_mirror_ops.sync_cpu_device_pagetables
callback. Enable CONFIG_HMM and CONFIG_HMM_MIRROR as a dependency in
DRM_AMDGPU_USERPTR Kconfig.

It supports both KFD userptr and gfx userptr paths.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Philip Yang
2018-07-23 17:45:46 -04:00
committed by Alex Deucher
parent e14ba95b90
commit 2c5a51f570
4 changed files with 74 additions and 100 deletions
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6
drivers/gpu/drm/amd/amdgpu/Kconfig
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@@ -26,10 +26,10 @@ config DRM_AMDGPU_CIK
config DRM_AMDGPU_USERPTR
bool "Always enable userptr write support"
depends on DRM_AMDGPU
select MMU_NOTIFIER
select HMM_MIRROR
help
This option selects CONFIG_MMU_NOTIFIER if it isn't already
selected to enabled full userptr support.
This option selects CONFIG_HMM and CONFIG_HMM_MIRROR if it
isn't already selected to enabled full userptr support.
config DRM_AMDGPU_GART_DEBUGFS
bool "Allow GART access through debugfs"