6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Philip Yang <Philip.Yang@xxxxxxx>
[ Upstream commit c99b16128082de519975aa147d9da3e40380de67 ]
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.Yang@xxxxxxx>
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Stable-dep-of: eb3c357bcb28 ("drm/amdkfd: Handle errors from svm validate and map")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 4 +---
drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 1 -
2 files changed, 1 insertion(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index bb65a99439802..dfc11699e79ab 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1720,10 +1720,8 @@ static int svm_range_validate_and_map(struct mm_struct *mm,
addr = next;
}
- if (addr == end) {
- prange->validated_once = true;
+ if (addr == end)
prange->mapped_to_gpu = true;
- }
unreserve_out:
svm_range_unreserve_bos(ctx);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.h b/drivers/gpu/drm/amd/amdkfd/kfd_svm.h
index 9e668eeefb32d..c216c8dd13c6c 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;
bool is_error_flag;
};
--
2.42.0
