diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2020-02-15 15:02:49 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-04-20 21:46:56 -0400 |
| commit | b1c46c7d622bed62898579548a7e9a21e1320c9d (patch) | |
| tree | eda763f5f1ed2cec61cdbb5b60c27485ee1869ce /drivers/gpu/drm/amd/amdkfd/kfd_svm.h | |
| parent | d8a3c1c80ceb656de00b45fe1595a040e5535202 (diff) | |
| download | linux-b1c46c7d622bed62898579548a7e9a21e1320c9d.tar.gz | |
drm/amdkfd: validate svm range system memory
Use HMM to get system memory pages address, which will be used to
map to GPUs or migrate to vram.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_svm.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h index 537101dd19a6..10c73348c2c0 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h +++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h @@ -46,11 +46,14 @@ * @remove_list:link list node used to add to remove list * @insert_list:link list node used to add to insert list * @npages: number of pages + * @lock: protect prange start, last, child_list, svm_bo_list + * @saved_flags:save/restore current PF_MEMALLOC flags * @flags: flags defined as KFD_IOCTL_SVM_FLAG_* * @perferred_loc: perferred location, 0 for CPU, or GPU id * @perfetch_loc: last prefetch location, 0 for CPU, or GPU id * @actual_loc: the actual location, 0 for CPU, or GPU id * @granularity:migration granularity, log2 num pages + * @notifier: register mmu interval notifier * @bitmap_access: index bitmap of GPUs which can access the range * @bitmap_aip: index bitmap of GPUs which can access the range in place * @@ -68,15 +71,30 @@ struct svm_range { struct list_head remove_list; struct list_head insert_list; uint64_t npages; + struct mutex lock; + unsigned int saved_flags; uint32_t flags; uint32_t preferred_loc; uint32_t prefetch_loc; uint32_t actual_loc; uint8_t granularity; + struct mmu_interval_notifier notifier; DECLARE_BITMAP(bitmap_access, MAX_GPU_INSTANCE); DECLARE_BITMAP(bitmap_aip, MAX_GPU_INSTANCE); }; +static inline void svm_range_lock(struct svm_range *prange) +{ + mutex_lock(&prange->lock); + prange->saved_flags = memalloc_noreclaim_save(); + +} +static inline void svm_range_unlock(struct svm_range *prange) +{ + memalloc_noreclaim_restore(prange->saved_flags); + mutex_unlock(&prange->lock); +} + int svm_range_list_init(struct kfd_process *p); void svm_range_list_fini(struct kfd_process *p); int svm_ioctl(struct kfd_process *p, enum kfd_ioctl_svm_op op, uint64_t start, |