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drm/amdkfd: Add quiesce_mm and resume_mm to kgd2kfd_calls

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These interfaces allow KGD to stop and resume all GPU user mode queue
access to a process address space. This is needed for handling MMU
notifiers of userptrs mapped for GPU access in KFD VMs.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
This commit is contained in:
Felix Kuehling
2018-03-23 15:32:32 -04:00
committed by Oded Gabbay
parent d1853f42b6
commit 6b95e7973a
5 changed files with 55 additions and 5 deletions
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6
drivers/gpu/drm/amd/include/kgd_kfd_interface.h
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@@ -382,6 +382,10 @@ struct kfd2kgd_calls {
*
* @resume: Notifies amdkfd about a resume action done to a kgd device
*
* @quiesce_mm: Quiesce all user queue access to specified MM address space
*
* @resume_mm: Resume user queue access to specified MM address space
*
* @schedule_evict_and_restore_process: Schedules work queue that will prepare
* for safe eviction of KFD BOs that belong to the specified process.
*
@@ -399,6 +403,8 @@ struct kgd2kfd_calls {
void (*interrupt)(struct kfd_dev *kfd, const void *ih_ring_entry);
void (*suspend)(struct kfd_dev *kfd);
int (*resume)(struct kfd_dev *kfd);
int (*quiesce_mm)(struct mm_struct *mm);
int (*resume_mm)(struct mm_struct *mm);
int (*schedule_evict_and_restore_process)(struct mm_struct *mm,
struct dma_fence *fence);
};