[PATCH 2/2] drm/amdkfd: set new unregistered range accessible by GPU

[Philip Yang]

GPU retry vm fault on unregistered address, new range is created to
recover the retry vm fault. Instead of setting new range perferred_loc
to GPU, add GPU to new range access_bitmap, to be able to update GPU
page table after new range migrate to VRAM. The new range preferred_loc
is default value KFD_IOCTL_SVM_LOCATION_UNDEFINED.

Correct one typo.

Signed-off-by: Philip Yang <Philip.Yang at amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 3b640772d9c5..5a486e0fbf18 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2243,7 +2243,7 @@ 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)) {
@@ -2251,9 +2251,8 @@ 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 */
+
+	bitmap_set(prange->bitmap_access, gpuidx, 1);
 	svm_range_add_to_svms(prange);
 	svm_range_add_notifier_locked(mm, prange);
 
-- 
2.17.1