[PATCH 6/7] drm/amdkfd: Fix PTE clearing during SVM unmap on GFX 12.1

[Alex Deucher <alexander.deucher@amd.com>]

From: Mukul Joshi <mukul.joshi@amd.com>

During migration from VRAM to RAM, when PTE is cleared, reset
the PTE to always ensure that PTE.P=1 is set on GFX 12.1. If
PTE.P is not set, it can lead to TF faults.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Reviewed-by: Alex Sierra <alex.sierra@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
index 97c2270f278fd..24a698702da75 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_svm.c
@@ -1313,7 +1313,7 @@ svm_range_unmap_from_gpu(struct amdgpu_device *adev, struct amdgpu_vm *vm,
 			 uint64_t start, uint64_t last,
 			 struct dma_fence **fence)
 {
-	uint64_t init_pte_value = 0;
+	uint64_t init_pte_value = adev->gmc.init_pte_flags;
 
 	pr_debug("[0x%llx 0x%llx]\n", start, last);
 
-- 
2.51.1