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| author | Honglei Huang <honghuan@amd.com> | 2026-06-30 18:21:27 +0800 |
|---|---|---|
| committer | Matthew Brost <matthew.brost@intel.com> | 2026-07-09 04:12:49 -0700 |
| commit | 808db118eb2b93727f4a8f300480e7c7ff4046fe (patch) | |
| tree | 80638374d78c13b99ed10e02c08f59b02ef7579f /include | |
| parent | e19d32c2b32dbb3b15e761cfd9dd35c38ec2c911 (diff) | |
| download | linux-808db118eb2b93727f4a8f300480e7c7ff4046fe.tar.gz linux-808db118eb2b93727f4a8f300480e7c7ff4046fe.zip | |
drm/gpusvm: let the drm_gpusvm core context purely MM level
The core mechanism of drm_gpusvm is HMM, which is fundamentally an
MM side subsystem. A drm_device, enters the picture on the device side at
DMA mapping / GPU bind.
So move struct drm_device from struct drm_gpusvm in drm_gpusvm. Let
drm_gpusvm keep its core neutral and leave device side decisions to
the driver. Make drm_gpusvm a pure MM level object.
- Move the drm_device from struct drm_gpusvm. drm_device now stored in
drm_gpusvm_pages.
- Drop the drm parameter from drm_gpusvm_init()
- Update the xe call sites in xe_svm_init() and other callers.
drm_device does not disappear from the framework, it is
relocated onto each drm_gpusvm_pages where DMA actually happens.
Suggested-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Honglei Huang <honghuan@amd.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20260630102127.392396-6-honghuan@amd.com
Diffstat (limited to 'include')
| -rw-r--r-- | include/drm/drm_gpusvm.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/include/drm/drm_gpusvm.h b/include/drm/drm_gpusvm.h index 2862104aa1b2..b7d987bf76aa 100644 --- a/include/drm/drm_gpusvm.h +++ b/include/drm/drm_gpusvm.h @@ -195,7 +195,6 @@ struct drm_gpusvm_range { * struct drm_gpusvm - GPU SVM structure * * @name: Name of the GPU SVM - * @drm: Pointer to the DRM device structure * @mm: Pointer to the mm_struct for the address space * @mm_start: Start address of GPU SVM * @mm_range: Range of the GPU SVM @@ -219,7 +218,6 @@ struct drm_gpusvm_range { */ struct drm_gpusvm { const char *name; - struct drm_device *drm; struct mm_struct *mm; unsigned long mm_start; unsigned long mm_range; @@ -271,7 +269,7 @@ struct drm_gpusvm_ctx { }; int drm_gpusvm_init(struct drm_gpusvm *gpusvm, - const char *name, struct drm_device *drm, + const char *name, struct mm_struct *mm, unsigned long mm_start, unsigned long mm_range, unsigned long notifier_size, |