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drm/gpusvm: export drm_gpusvm_pages API

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Export get/unmap/free pages API. We also need to tweak the SVM init to
allow skipping much of the unneeded parts.

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://lore.kernel.org/r/20250828142430.615826-15-matthew.auld@intel.com
This commit is contained in:
Matthew Auld
2025-08-28 15:24:36 +01:00
parent 6364afd532
commit 83f706ecbd
2 changed files with 67 additions and 15 deletions
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include/drm/drm_gpusvm.h
+16
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@@ -307,6 +307,22 @@ drm_gpusvm_range_find(struct drm_gpusvm_notifier *notifier, unsigned long start,
void drm_gpusvm_range_set_unmapped(struct drm_gpusvm_range *range,
const struct mmu_notifier_range *mmu_range);
int drm_gpusvm_get_pages(struct drm_gpusvm *gpusvm,
struct drm_gpusvm_pages *svm_pages,
struct mm_struct *mm,
struct mmu_interval_notifier *notifier,
unsigned long pages_start, unsigned long pages_end,
const struct drm_gpusvm_ctx *ctx);
void drm_gpusvm_unmap_pages(struct drm_gpusvm *gpusvm,
struct drm_gpusvm_pages *svm_pages,
unsigned long npages,
const struct drm_gpusvm_ctx *ctx);
void drm_gpusvm_free_pages(struct drm_gpusvm *gpusvm,
struct drm_gpusvm_pages *svm_pages,
unsigned long npages);
#ifdef CONFIG_LOCKDEP
/**
* drm_gpusvm_driver_set_lock() - Set the lock protecting accesses to GPU SVM