[PATCH] drm/amdkfd: Remove svm range validated_once flag

[Philip Yang]

The validated_once flag is not used after the prefault was removed, The
prefault was needed to ensure validate all system memory pages at least
once before mapping or migrating the range to GPU.

Signed-off-by: Philip Yang <philip.y...@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 3 ---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 1 -
 2 files changed, 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c 
b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 26018b1d6138..562da3c40515 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1730,9 +1730,6 @@ static int svm_range_validate_and_map(struct mm_struct 
*mm,
                addr = next;
        }
 
-       if (addr == end)
-               prange->validated_once = true;
-
 unreserve_out:
        svm_range_unreserve_bos(ctx);
        if (!r)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h 
b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
index 91715bf3233c..25f711905738 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
@@ -132,7 +132,6 @@ struct svm_range {
        struct list_head                child_list;
        DECLARE_BITMAP(bitmap_access, MAX_GPU_INSTANCE);
        DECLARE_BITMAP(bitmap_aip, MAX_GPU_INSTANCE);
-       bool                            validated_once;
        bool                            mapped_to_gpu;
 };
 
-- 
2.35.1