This is a note to let you know that I've just added the patch titled
drm/amdkfd: Remove svm range validated_once flag
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdkfd-remove-svm-range-validated_once-flag.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 0219f89d97d183fec437709aa3c9b897f7fcde07
Author: Philip Yang <Philip.Yang@xxxxxxx>
Date: Tue Aug 1 11:38:32 2023 -0400
drm/amdkfd: Remove svm range validated_once flag
[ 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>
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 4c1b72194a6f8..8cbfe18d16c6e 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1685,10 +1685,8 @@ 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 21b14510882b8..21ca57992e054 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;
};
