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drm/amdgpu: Add notifier lock for KFD userptrs

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Add a per-process MMU notifier lock for processing notifiers from
userptrs. Use that lock to properly synchronize page table updates with
MMU notifiers.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Xiaogang Chen<Xiaogang.Chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Felix Kuehling
2021-04-21 21:09:54 -04:00
committed by Alex Deucher
parent fe6872adb0
commit f95f51a4c3
6 changed files with 172 additions and 91 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.h
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@@ -29,12 +29,13 @@
#include <linux/rwsem.h>
#include <linux/workqueue.h>
#include <linux/interval_tree.h>
#include <linux/mmu_notifier.h>
int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
uint64_t start, uint64_t npages, bool readonly,
void *owner, struct page **pages,
struct hmm_range **phmm_range);
int amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
bool amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
#if defined(CONFIG_HMM_MIRROR)
int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr);