After svm range prefetch and migrate to GPU, if GPU has no access or
access in place attribute, add GPU to range access_bitmap to be able to
update GPU page table.
Signed-off-by: Philip Yang <Philip.Yang@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index d9111fea724b..3b640772d9c5 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -2869,6 +2869,17 @@ svm_range_set_attr(struct kfd_process *p, uint64_t start, uint64_t size,
continue;
}
+ if (migrated && prange->prefetch_loc) {
+ int gpuidx;
+
+ gpuidx = kfd_process_gpuidx_from_gpuid(p,
+ prange->prefetch_loc);
+ if (gpuidx >= 0 &&
+ !test_bit(gpuidx, prange->bitmap_access) &&
+ !test_bit(gpuidx, prange->bitmap_aip))
+ bitmap_set(prange->bitmap_access, gpuidx, 1);
+ }
+
r = svm_range_validate_and_map(mm, prange, MAX_GPU_INSTANCE,
true, true);
if (r)
--
2.17.1
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