Commit a9a76bee authored by Philip Yang's avatar Philip Yang Committed by Alex Deucher
Browse files

drm/amdkfd: new range accessible by all GPUs 



If xnack is on, new range is created to recover retry vm fault or
created by SVM API calls, set all GPUs have access to the range.

Signed-off-by: default avatarPhilip Yang <Philip.Yang@amd.com>
Reviewed-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 6e6fe7c9

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

+8 −4
Original line number Diff line number Diff line
@@ -258,6 +258,7 @@ svm_range *svm_range_new(struct svm_range_list *svms, uint64_t start, 
{

	uint64_t size = last - start + 1;

	struct svm_range *prange;

	struct kfd_process *p;



	prange = kzalloc(sizeof(*prange), GFP_KERNEL);

	if (!prange)
@@ -277,6 +278,11 @@ svm_range *svm_range_new(struct svm_range_list *svms, uint64_t start, 
	prange->validate_timestamp = 0;

	mutex_init(&prange->migrate_mutex);

	mutex_init(&prange->lock);



	p = container_of(svms, struct kfd_process, svms);

	if (p->xnack_enabled)

		bitmap_fill(prange->bitmap_access, MAX_GPU_INSTANCE);



	svm_range_set_default_attributes(&prange->preferred_loc,

					 &prange->prefetch_loc,

					 &prange->granularity, &prange->flags);
@@ -2246,7 +2252,7 @@ svm_range *svm_range_create_unregistered_range(struct amdgpu_device *adev, 


	prange = svm_range_new(&p->svms, start, last);

	if (!prange) {

		pr_debug("Failed to create prange in address [0x%llx]\\n", addr);

		pr_debug("Failed to create prange in address [0x%llx]\n", addr);

		return NULL;

	}

	if (kfd_process_gpuid_from_kgd(p, adev, &gpuid, &gpuidx)) {
@@ -2254,9 +2260,7 @@ svm_range *svm_range_create_unregistered_range(struct amdgpu_device *adev, 
		svm_range_free(prange);

		return NULL;

	}

	prange->preferred_loc = gpuid;

	prange->actual_loc = 0;

	/* Gurantee prange is migrate it */



	svm_range_add_to_svms(prange);

	svm_range_add_notifier_locked(mm, prange);